/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/locks/test_locks_12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 19:42:35,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 19:42:35,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 19:42:35,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 19:42:35,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 19:42:35,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 19:42:35,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 19:42:35,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 19:42:35,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 19:42:35,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 19:42:35,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 19:42:35,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 19:42:35,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-22 19:42:35,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 19:42:35,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 19:42:35,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 19:42:35,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 19:42:35,710 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 19:42:35,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 19:42:35,710 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-22 19:42:35,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 19:42:35,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 19:42:35,711 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-22 19:42:35,711 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-22 19:42:35,711 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-22 19:42:35,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 19:42:35,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-22 19:42:35,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 19:42:35,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 19:42:35,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 19:42:35,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 19:42:35,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 19:42:35,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 19:42:35,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 19:42:35,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 19:42:35,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 19:42:35,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 19:42:35,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 19:42:36,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 19:42:36,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 19:42:36,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 19:42:36,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 19:42:36,191 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 19:42:36,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_12.c [2020-12-22 19:42:36,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb310c796/2e3dcefb382d4de28c42539b95346ddb/FLAGbc7e7c413 [2020-12-22 19:42:36,908 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 19:42:36,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_12.c [2020-12-22 19:42:36,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb310c796/2e3dcefb382d4de28c42539b95346ddb/FLAGbc7e7c413 [2020-12-22 19:42:37,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb310c796/2e3dcefb382d4de28c42539b95346ddb [2020-12-22 19:42:37,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 19:42:37,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 19:42:37,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:37,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 19:42:37,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 19:42:37,271 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb683e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37, skipping insertion in model container [2020-12-22 19:42:37,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 19:42:37,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 19:42:37,492 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/locks/test_locks_12.c[4591,4604] [2020-12-22 19:42:37,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:37,508 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 19:42:37,538 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/locks/test_locks_12.c[4591,4604] [2020-12-22 19:42:37,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 19:42:37,558 INFO L208 MainTranslator]: Completed translation [2020-12-22 19:42:37,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37 WrapperNode [2020-12-22 19:42:37,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 19:42:37,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:37,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 19:42:37,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 19:42:37,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 19:42:37,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 19:42:37,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 19:42:37,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 19:42:37,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (1/1) ... [2020-12-22 19:42:37,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 19:42:37,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 19:42:37,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 19:42:37,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 19:42:37,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (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 19:42:37,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 19:42:37,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 19:42:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 19:42:37,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 19:42:38,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 19:42:38,406 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-22 19:42:38,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:38 BoogieIcfgContainer [2020-12-22 19:42:38,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 19:42:38,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 19:42:38,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 19:42:38,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 19:42:38,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:42:37" (1/3) ... [2020-12-22 19:42:38,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1938c983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:38, skipping insertion in model container [2020-12-22 19:42:38,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:42:37" (2/3) ... [2020-12-22 19:42:38,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1938c983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:42:38, skipping insertion in model container [2020-12-22 19:42:38,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:38" (3/3) ... [2020-12-22 19:42:38,420 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2020-12-22 19:42:38,429 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 19:42:38,436 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 19:42:38,462 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 19:42:38,492 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 19:42:38,492 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-22 19:42:38,492 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 19:42:38,492 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 19:42:38,493 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 19:42:38,493 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 19:42:38,493 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 19:42:38,493 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 19:42:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-12-22 19:42:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 19:42:38,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 19:42:38,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,531 INFO L82 PathProgramCache]: Analyzing trace with hash 28704555, now seen corresponding path program 1 times [2020-12-22 19:42:38,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164129001] [2020-12-22 19:42:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,729 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 19:42:38,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164129001] [2020-12-22 19:42:38,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:38,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351586335] [2020-12-22 19:42:38,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 19:42:38,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 19:42:38,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 19:42:38,764 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-12-22 19:42:38,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,786 INFO L93 Difference]: Finished difference Result 47 states and 82 transitions. [2020-12-22 19:42:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 19:42:38,788 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-22 19:42:38,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,801 INFO L225 Difference]: With dead ends: 47 [2020-12-22 19:42:38,801 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 19:42:38,804 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 19:42:38,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 19:42:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 19:42:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 19:42:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 80 transitions. [2020-12-22 19:42:38,852 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 80 transitions. Word has length 5 [2020-12-22 19:42:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:38,853 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 80 transitions. [2020-12-22 19:42:38,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 19:42:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 80 transitions. [2020-12-22 19:42:38,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 19:42:38,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:38,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 19:42:38,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 19:42:38,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:38,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:38,856 INFO L82 PathProgramCache]: Analyzing trace with hash 889699051, now seen corresponding path program 1 times [2020-12-22 19:42:38,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:38,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393733376] [2020-12-22 19:42:38,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:38,931 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 19:42:38,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393733376] [2020-12-22 19:42:38,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:38,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 19:42:38,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936087524] [2020-12-22 19:42:38,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:38,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:38,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:38,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:38,941 INFO L87 Difference]: Start difference. First operand 45 states and 80 transitions. Second operand 3 states. [2020-12-22 19:42:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:38,975 INFO L93 Difference]: Finished difference Result 44 states and 79 transitions. [2020-12-22 19:42:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:38,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-22 19:42:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:38,980 INFO L225 Difference]: With dead ends: 44 [2020-12-22 19:42:38,980 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 19:42:38,982 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 19:42:38,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 19:42:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-22 19:42:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 19:42:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 77 transitions. [2020-12-22 19:42:39,001 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 77 transitions. Word has length 6 [2020-12-22 19:42:39,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,002 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 77 transitions. [2020-12-22 19:42:39,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 77 transitions. [2020-12-22 19:42:39,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:42:39,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 19:42:39,007 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1341605783, now seen corresponding path program 1 times [2020-12-22 19:42:39,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543235716] [2020-12-22 19:42:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,182 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 19:42:39,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543235716] [2020-12-22 19:42:39,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476894189] [2020-12-22 19:42:39,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,193 INFO L87 Difference]: Start difference. First operand 42 states and 77 transitions. Second operand 3 states. [2020-12-22 19:42:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,220 INFO L93 Difference]: Finished difference Result 81 states and 149 transitions. [2020-12-22 19:42:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 19:42:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,222 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:42:39,223 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:42:39,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:42:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2020-12-22 19:42:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-22 19:42:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 102 transitions. [2020-12-22 19:42:39,233 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 102 transitions. Word has length 19 [2020-12-22 19:42:39,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,234 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 102 transitions. [2020-12-22 19:42:39,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 102 transitions. [2020-12-22 19:42:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 19:42:39,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 19:42:39,236 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,237 INFO L82 PathProgramCache]: Analyzing trace with hash 61742105, now seen corresponding path program 1 times [2020-12-22 19:42:39,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416321179] [2020-12-22 19:42:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,296 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 19:42:39,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416321179] [2020-12-22 19:42:39,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046616391] [2020-12-22 19:42:39,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,303 INFO L87 Difference]: Start difference. First operand 55 states and 102 transitions. Second operand 3 states. [2020-12-22 19:42:39,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,345 INFO L93 Difference]: Finished difference Result 81 states and 147 transitions. [2020-12-22 19:42:39,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 19:42:39,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,348 INFO L225 Difference]: With dead ends: 81 [2020-12-22 19:42:39,348 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 19:42:39,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 19:42:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-12-22 19:42:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-22 19:42:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 146 transitions. [2020-12-22 19:42:39,374 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 146 transitions. Word has length 19 [2020-12-22 19:42:39,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,375 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 146 transitions. [2020-12-22 19:42:39,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 146 transitions. [2020-12-22 19:42:39,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:39,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 19:42:39,377 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1359680987, now seen corresponding path program 1 times [2020-12-22 19:42:39,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152809125] [2020-12-22 19:42:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,433 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 19:42:39,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152809125] [2020-12-22 19:42:39,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702247121] [2020-12-22 19:42:39,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,436 INFO L87 Difference]: Start difference. First operand 79 states and 146 transitions. Second operand 3 states. [2020-12-22 19:42:39,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,454 INFO L93 Difference]: Finished difference Result 84 states and 149 transitions. [2020-12-22 19:42:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,456 INFO L225 Difference]: With dead ends: 84 [2020-12-22 19:42:39,457 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 19:42:39,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 19:42:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-12-22 19:42:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 19:42:39,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 148 transitions. [2020-12-22 19:42:39,466 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 148 transitions. Word has length 20 [2020-12-22 19:42:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,467 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 148 transitions. [2020-12-22 19:42:39,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 148 transitions. [2020-12-22 19:42:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:39,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 19:42:39,469 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1914217955, now seen corresponding path program 1 times [2020-12-22 19:42:39,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550092614] [2020-12-22 19:42:39,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,561 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 19:42:39,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550092614] [2020-12-22 19:42:39,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33374527] [2020-12-22 19:42:39,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,568 INFO L87 Difference]: Start difference. First operand 82 states and 148 transitions. Second operand 3 states. [2020-12-22 19:42:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,602 INFO L93 Difference]: Finished difference Result 155 states and 282 transitions. [2020-12-22 19:42:39,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,605 INFO L225 Difference]: With dead ends: 155 [2020-12-22 19:42:39,605 INFO L226 Difference]: Without dead ends: 155 [2020-12-22 19:42:39,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-22 19:42:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2020-12-22 19:42:39,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 19:42:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 197 transitions. [2020-12-22 19:42:39,619 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 197 transitions. Word has length 20 [2020-12-22 19:42:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,620 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 197 transitions. [2020-12-22 19:42:39,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 197 transitions. [2020-12-22 19:42:39,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 19:42:39,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 19:42:39,622 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash 634354277, now seen corresponding path program 1 times [2020-12-22 19:42:39,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597948483] [2020-12-22 19:42:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,670 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 19:42:39,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597948483] [2020-12-22 19:42:39,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267737488] [2020-12-22 19:42:39,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,678 INFO L87 Difference]: Start difference. First operand 109 states and 197 transitions. Second operand 3 states. [2020-12-22 19:42:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,717 INFO L93 Difference]: Finished difference Result 157 states and 280 transitions. [2020-12-22 19:42:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 19:42:39,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,720 INFO L225 Difference]: With dead ends: 157 [2020-12-22 19:42:39,720 INFO L226 Difference]: Without dead ends: 157 [2020-12-22 19:42:39,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-22 19:42:39,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-12-22 19:42:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-22 19:42:39,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 279 transitions. [2020-12-22 19:42:39,746 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 279 transitions. Word has length 20 [2020-12-22 19:42:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,750 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 279 transitions. [2020-12-22 19:42:39,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 279 transitions. [2020-12-22 19:42:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:39,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 19:42:39,755 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,756 INFO L82 PathProgramCache]: Analyzing trace with hash -788572498, now seen corresponding path program 1 times [2020-12-22 19:42:39,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676564079] [2020-12-22 19:42:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,818 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 19:42:39,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676564079] [2020-12-22 19:42:39,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096263081] [2020-12-22 19:42:39,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,821 INFO L87 Difference]: Start difference. First operand 155 states and 279 transitions. Second operand 3 states. [2020-12-22 19:42:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,838 INFO L93 Difference]: Finished difference Result 159 states and 280 transitions. [2020-12-22 19:42:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,841 INFO L225 Difference]: With dead ends: 159 [2020-12-22 19:42:39,841 INFO L226 Difference]: Without dead ends: 159 [2020-12-22 19:42:39,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-22 19:42:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-12-22 19:42:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-22 19:42:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 279 transitions. [2020-12-22 19:42:39,854 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 279 transitions. Word has length 21 [2020-12-22 19:42:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,854 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 279 transitions. [2020-12-22 19:42:39,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 279 transitions. [2020-12-22 19:42:39,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:39,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 19:42:39,857 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1809640852, now seen corresponding path program 1 times [2020-12-22 19:42:39,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560564702] [2020-12-22 19:42:39,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:39,895 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 19:42:39,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560564702] [2020-12-22 19:42:39,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:39,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:39,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912936357] [2020-12-22 19:42:39,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:39,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:39,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:39,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,899 INFO L87 Difference]: Start difference. First operand 157 states and 279 transitions. Second operand 3 states. [2020-12-22 19:42:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:39,915 INFO L93 Difference]: Finished difference Result 303 states and 532 transitions. [2020-12-22 19:42:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:39,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:39,918 INFO L225 Difference]: With dead ends: 303 [2020-12-22 19:42:39,918 INFO L226 Difference]: Without dead ends: 303 [2020-12-22 19:42:39,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-12-22 19:42:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2020-12-22 19:42:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-12-22 19:42:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 531 transitions. [2020-12-22 19:42:39,957 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 531 transitions. Word has length 21 [2020-12-22 19:42:39,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:39,958 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 531 transitions. [2020-12-22 19:42:39,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:39,962 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 531 transitions. [2020-12-22 19:42:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 19:42:39,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:39,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:39,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 19:42:39,968 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:39,969 INFO L82 PathProgramCache]: Analyzing trace with hash -529777174, now seen corresponding path program 1 times [2020-12-22 19:42:39,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:39,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712191443] [2020-12-22 19:42:39,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,040 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 19:42:40,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712191443] [2020-12-22 19:42:40,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57601901] [2020-12-22 19:42:40,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,046 INFO L87 Difference]: Start difference. First operand 301 states and 531 transitions. Second operand 3 states. [2020-12-22 19:42:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,066 INFO L93 Difference]: Finished difference Result 383 states and 680 transitions. [2020-12-22 19:42:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-22 19:42:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,079 INFO L225 Difference]: With dead ends: 383 [2020-12-22 19:42:40,080 INFO L226 Difference]: Without dead ends: 383 [2020-12-22 19:42:40,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-12-22 19:42:40,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 301. [2020-12-22 19:42:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-12-22 19:42:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 527 transitions. [2020-12-22 19:42:40,109 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 527 transitions. Word has length 21 [2020-12-22 19:42:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,109 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 527 transitions. [2020-12-22 19:42:40,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 527 transitions. [2020-12-22 19:42:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:40,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 19:42:40,115 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash -264078182, now seen corresponding path program 1 times [2020-12-22 19:42:40,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144122564] [2020-12-22 19:42:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:40,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144122564] [2020-12-22 19:42:40,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029751534] [2020-12-22 19:42:40,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,155 INFO L87 Difference]: Start difference. First operand 301 states and 527 transitions. Second operand 3 states. [2020-12-22 19:42:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,170 INFO L93 Difference]: Finished difference Result 563 states and 992 transitions. [2020-12-22 19:42:40,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:40,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,174 INFO L225 Difference]: With dead ends: 563 [2020-12-22 19:42:40,175 INFO L226 Difference]: Without dead ends: 563 [2020-12-22 19:42:40,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-22 19:42:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 417. [2020-12-22 19:42:40,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-12-22 19:42:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 719 transitions. [2020-12-22 19:42:40,188 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 719 transitions. Word has length 22 [2020-12-22 19:42:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,189 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 719 transitions. [2020-12-22 19:42:40,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 719 transitions. [2020-12-22 19:42:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 19:42:40,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 19:42:40,192 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1543941860, now seen corresponding path program 1 times [2020-12-22 19:42:40,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006735408] [2020-12-22 19:42:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,223 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 19:42:40,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006735408] [2020-12-22 19:42:40,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608601675] [2020-12-22 19:42:40,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,226 INFO L87 Difference]: Start difference. First operand 417 states and 719 transitions. Second operand 3 states. [2020-12-22 19:42:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,242 INFO L93 Difference]: Finished difference Result 587 states and 1004 transitions. [2020-12-22 19:42:40,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 19:42:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,247 INFO L225 Difference]: With dead ends: 587 [2020-12-22 19:42:40,247 INFO L226 Difference]: Without dead ends: 587 [2020-12-22 19:42:40,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-12-22 19:42:40,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 585. [2020-12-22 19:42:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-12-22 19:42:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 1003 transitions. [2020-12-22 19:42:40,264 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 1003 transitions. Word has length 22 [2020-12-22 19:42:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,264 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 1003 transitions. [2020-12-22 19:42:40,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,264 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 1003 transitions. [2020-12-22 19:42:40,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:40,266 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 19:42:40,266 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,267 INFO L82 PathProgramCache]: Analyzing trace with hash 403724673, now seen corresponding path program 1 times [2020-12-22 19:42:40,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547842903] [2020-12-22 19:42:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,297 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 19:42:40,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547842903] [2020-12-22 19:42:40,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678952572] [2020-12-22 19:42:40,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,300 INFO L87 Difference]: Start difference. First operand 585 states and 1003 transitions. Second operand 3 states. [2020-12-22 19:42:40,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,315 INFO L93 Difference]: Finished difference Result 599 states and 1012 transitions. [2020-12-22 19:42:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,320 INFO L225 Difference]: With dead ends: 599 [2020-12-22 19:42:40,320 INFO L226 Difference]: Without dead ends: 599 [2020-12-22 19:42:40,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-12-22 19:42:40,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-12-22 19:42:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-22 19:42:40,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 1011 transitions. [2020-12-22 19:42:40,337 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 1011 transitions. Word has length 23 [2020-12-22 19:42:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,338 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 1011 transitions. [2020-12-22 19:42:40,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,338 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 1011 transitions. [2020-12-22 19:42:40,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:40,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 19:42:40,340 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,341 INFO L82 PathProgramCache]: Analyzing trace with hash -617343681, now seen corresponding path program 1 times [2020-12-22 19:42:40,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579888196] [2020-12-22 19:42:40,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,370 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 19:42:40,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579888196] [2020-12-22 19:42:40,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840973413] [2020-12-22 19:42:40,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,373 INFO L87 Difference]: Start difference. First operand 597 states and 1011 transitions. Second operand 3 states. [2020-12-22 19:42:40,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,391 INFO L93 Difference]: Finished difference Result 1095 states and 1868 transitions. [2020-12-22 19:42:40,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:40,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,398 INFO L225 Difference]: With dead ends: 1095 [2020-12-22 19:42:40,398 INFO L226 Difference]: Without dead ends: 1095 [2020-12-22 19:42:40,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-12-22 19:42:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 837. [2020-12-22 19:42:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-12-22 19:42:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1387 transitions. [2020-12-22 19:42:40,423 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1387 transitions. Word has length 23 [2020-12-22 19:42:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,424 INFO L481 AbstractCegarLoop]: Abstraction has 837 states and 1387 transitions. [2020-12-22 19:42:40,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1387 transitions. [2020-12-22 19:42:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 19:42:40,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 19:42:40,427 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1897207359, now seen corresponding path program 1 times [2020-12-22 19:42:40,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917857135] [2020-12-22 19:42:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,455 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 19:42:40,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917857135] [2020-12-22 19:42:40,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683008519] [2020-12-22 19:42:40,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,459 INFO L87 Difference]: Start difference. First operand 837 states and 1387 transitions. Second operand 3 states. [2020-12-22 19:42:40,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,480 INFO L93 Difference]: Finished difference Result 1159 states and 1908 transitions. [2020-12-22 19:42:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 19:42:40,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,490 INFO L225 Difference]: With dead ends: 1159 [2020-12-22 19:42:40,490 INFO L226 Difference]: Without dead ends: 1159 [2020-12-22 19:42:40,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-12-22 19:42:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2020-12-22 19:42:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-12-22 19:42:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1907 transitions. [2020-12-22 19:42:40,525 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1907 transitions. Word has length 23 [2020-12-22 19:42:40,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,527 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1907 transitions. [2020-12-22 19:42:40,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1907 transitions. [2020-12-22 19:42:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:40,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 19:42:40,530 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1957570863, now seen corresponding path program 1 times [2020-12-22 19:42:40,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926583298] [2020-12-22 19:42:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,582 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 19:42:40,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926583298] [2020-12-22 19:42:40,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592083758] [2020-12-22 19:42:40,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,589 INFO L87 Difference]: Start difference. First operand 1157 states and 1907 transitions. Second operand 3 states. [2020-12-22 19:42:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,632 INFO L93 Difference]: Finished difference Result 1175 states and 1908 transitions. [2020-12-22 19:42:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:40,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,639 INFO L225 Difference]: With dead ends: 1175 [2020-12-22 19:42:40,639 INFO L226 Difference]: Without dead ends: 1175 [2020-12-22 19:42:40,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2020-12-22 19:42:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1173. [2020-12-22 19:42:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-12-22 19:42:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1907 transitions. [2020-12-22 19:42:40,672 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1907 transitions. Word has length 24 [2020-12-22 19:42:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,673 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1907 transitions. [2020-12-22 19:42:40,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1907 transitions. [2020-12-22 19:42:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:40,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 19:42:40,677 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1316328079, now seen corresponding path program 1 times [2020-12-22 19:42:40,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883034438] [2020-12-22 19:42:40,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,709 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 19:42:40,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883034438] [2020-12-22 19:42:40,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800269335] [2020-12-22 19:42:40,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,713 INFO L87 Difference]: Start difference. First operand 1173 states and 1907 transitions. Second operand 3 states. [2020-12-22 19:42:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,740 INFO L93 Difference]: Finished difference Result 2119 states and 3476 transitions. [2020-12-22 19:42:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,754 INFO L225 Difference]: With dead ends: 2119 [2020-12-22 19:42:40,754 INFO L226 Difference]: Without dead ends: 2119 [2020-12-22 19:42:40,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2119 states. [2020-12-22 19:42:40,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2119 to 1669. [2020-12-22 19:42:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1669 states. [2020-12-22 19:42:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2643 transitions. [2020-12-22 19:42:40,812 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2643 transitions. Word has length 24 [2020-12-22 19:42:40,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,812 INFO L481 AbstractCegarLoop]: Abstraction has 1669 states and 2643 transitions. [2020-12-22 19:42:40,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2643 transitions. [2020-12-22 19:42:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 19:42:40,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 19:42:40,816 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,817 INFO L82 PathProgramCache]: Analyzing trace with hash 36464401, now seen corresponding path program 1 times [2020-12-22 19:42:40,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013847336] [2020-12-22 19:42:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:40,840 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 19:42:40,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013847336] [2020-12-22 19:42:40,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:40,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:40,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286478120] [2020-12-22 19:42:40,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:40,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:40,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:40,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,843 INFO L87 Difference]: Start difference. First operand 1669 states and 2643 transitions. Second operand 3 states. [2020-12-22 19:42:40,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:40,869 INFO L93 Difference]: Finished difference Result 2279 states and 3588 transitions. [2020-12-22 19:42:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:40,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 19:42:40,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:40,883 INFO L225 Difference]: With dead ends: 2279 [2020-12-22 19:42:40,884 INFO L226 Difference]: Without dead ends: 2279 [2020-12-22 19:42:40,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-12-22 19:42:40,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2277. [2020-12-22 19:42:40,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2277 states. [2020-12-22 19:42:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3587 transitions. [2020-12-22 19:42:40,955 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3587 transitions. Word has length 24 [2020-12-22 19:42:40,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:40,956 INFO L481 AbstractCegarLoop]: Abstraction has 2277 states and 3587 transitions. [2020-12-22 19:42:40,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:40,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3587 transitions. [2020-12-22 19:42:40,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:40,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:40,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:40,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 19:42:40,961 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:40,961 INFO L82 PathProgramCache]: Analyzing trace with hash -2143288106, now seen corresponding path program 1 times [2020-12-22 19:42:40,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:40,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072912509] [2020-12-22 19:42:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,009 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 19:42:41,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072912509] [2020-12-22 19:42:41,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024615758] [2020-12-22 19:42:41,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,015 INFO L87 Difference]: Start difference. First operand 2277 states and 3587 transitions. Second operand 3 states. [2020-12-22 19:42:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,046 INFO L93 Difference]: Finished difference Result 2311 states and 3588 transitions. [2020-12-22 19:42:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,060 INFO L225 Difference]: With dead ends: 2311 [2020-12-22 19:42:41,060 INFO L226 Difference]: Without dead ends: 2311 [2020-12-22 19:42:41,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-12-22 19:42:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2309. [2020-12-22 19:42:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2020-12-22 19:42:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3587 transitions. [2020-12-22 19:42:41,129 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3587 transitions. Word has length 25 [2020-12-22 19:42:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,130 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 3587 transitions. [2020-12-22 19:42:41,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3587 transitions. [2020-12-22 19:42:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:41,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 19:42:41,135 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1130610836, now seen corresponding path program 1 times [2020-12-22 19:42:41,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543970073] [2020-12-22 19:42:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,180 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 19:42:41,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543970073] [2020-12-22 19:42:41,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112350766] [2020-12-22 19:42:41,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,184 INFO L87 Difference]: Start difference. First operand 2309 states and 3587 transitions. Second operand 3 states. [2020-12-22 19:42:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,229 INFO L93 Difference]: Finished difference Result 4103 states and 6436 transitions. [2020-12-22 19:42:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:41,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,278 INFO L225 Difference]: With dead ends: 4103 [2020-12-22 19:42:41,279 INFO L226 Difference]: Without dead ends: 4103 [2020-12-22 19:42:41,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4103 states. [2020-12-22 19:42:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4103 to 3333. [2020-12-22 19:42:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3333 states. [2020-12-22 19:42:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 5027 transitions. [2020-12-22 19:42:41,376 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 5027 transitions. Word has length 25 [2020-12-22 19:42:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,376 INFO L481 AbstractCegarLoop]: Abstraction has 3333 states and 5027 transitions. [2020-12-22 19:42:41,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 5027 transitions. [2020-12-22 19:42:41,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 19:42:41,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 19:42:41,383 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,384 INFO L82 PathProgramCache]: Analyzing trace with hash -149252842, now seen corresponding path program 1 times [2020-12-22 19:42:41,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584662678] [2020-12-22 19:42:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,416 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 19:42:41,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584662678] [2020-12-22 19:42:41,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679864200] [2020-12-22 19:42:41,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,420 INFO L87 Difference]: Start difference. First operand 3333 states and 5027 transitions. Second operand 3 states. [2020-12-22 19:42:41,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,458 INFO L93 Difference]: Finished difference Result 4487 states and 6724 transitions. [2020-12-22 19:42:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 19:42:41,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,481 INFO L225 Difference]: With dead ends: 4487 [2020-12-22 19:42:41,482 INFO L226 Difference]: Without dead ends: 4487 [2020-12-22 19:42:41,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4487 states. [2020-12-22 19:42:41,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4487 to 4485. [2020-12-22 19:42:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4485 states. [2020-12-22 19:42:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4485 states to 4485 states and 6723 transitions. [2020-12-22 19:42:41,600 INFO L78 Accepts]: Start accepts. Automaton has 4485 states and 6723 transitions. Word has length 25 [2020-12-22 19:42:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,600 INFO L481 AbstractCegarLoop]: Abstraction has 4485 states and 6723 transitions. [2020-12-22 19:42:41,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4485 states and 6723 transitions. [2020-12-22 19:42:41,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:41,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 19:42:41,607 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,608 INFO L82 PathProgramCache]: Analyzing trace with hash 689412294, now seen corresponding path program 1 times [2020-12-22 19:42:41,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397442573] [2020-12-22 19:42:41,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,649 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 19:42:41,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397442573] [2020-12-22 19:42:41,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308656770] [2020-12-22 19:42:41,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,652 INFO L87 Difference]: Start difference. First operand 4485 states and 6723 transitions. Second operand 3 states. [2020-12-22 19:42:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:41,695 INFO L93 Difference]: Finished difference Result 4551 states and 6724 transitions. [2020-12-22 19:42:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:41,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:41,734 INFO L225 Difference]: With dead ends: 4551 [2020-12-22 19:42:41,735 INFO L226 Difference]: Without dead ends: 4551 [2020-12-22 19:42:41,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4551 states. [2020-12-22 19:42:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4551 to 4549. [2020-12-22 19:42:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4549 states. [2020-12-22 19:42:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 6723 transitions. [2020-12-22 19:42:41,902 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 6723 transitions. Word has length 26 [2020-12-22 19:42:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:41,903 INFO L481 AbstractCegarLoop]: Abstraction has 4549 states and 6723 transitions. [2020-12-22 19:42:41,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 6723 transitions. [2020-12-22 19:42:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:41,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:41,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:41,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 19:42:41,910 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:41,912 INFO L82 PathProgramCache]: Analyzing trace with hash -331656060, now seen corresponding path program 1 times [2020-12-22 19:42:41,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:41,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245435511] [2020-12-22 19:42:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 19:42:41,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245435511] [2020-12-22 19:42:41,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:41,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:41,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564524250] [2020-12-22 19:42:41,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:41,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:41,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:41,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:41,964 INFO L87 Difference]: Start difference. First operand 4549 states and 6723 transitions. Second operand 3 states. [2020-12-22 19:42:42,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,021 INFO L93 Difference]: Finished difference Result 7943 states and 11844 transitions. [2020-12-22 19:42:42,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,042 INFO L225 Difference]: With dead ends: 7943 [2020-12-22 19:42:42,042 INFO L226 Difference]: Without dead ends: 7943 [2020-12-22 19:42:42,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7943 states. [2020-12-22 19:42:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7943 to 6661. [2020-12-22 19:42:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6661 states. [2020-12-22 19:42:42,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 9539 transitions. [2020-12-22 19:42:42,292 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 9539 transitions. Word has length 26 [2020-12-22 19:42:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,292 INFO L481 AbstractCegarLoop]: Abstraction has 6661 states and 9539 transitions. [2020-12-22 19:42:42,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 9539 transitions. [2020-12-22 19:42:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 19:42:42,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 19:42:42,304 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1611519738, now seen corresponding path program 1 times [2020-12-22 19:42:42,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303778000] [2020-12-22 19:42:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,326 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 19:42:42,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303778000] [2020-12-22 19:42:42,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096780133] [2020-12-22 19:42:42,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,328 INFO L87 Difference]: Start difference. First operand 6661 states and 9539 transitions. Second operand 3 states. [2020-12-22 19:42:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,368 INFO L93 Difference]: Finished difference Result 8839 states and 12548 transitions. [2020-12-22 19:42:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 19:42:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,392 INFO L225 Difference]: With dead ends: 8839 [2020-12-22 19:42:42,393 INFO L226 Difference]: Without dead ends: 8839 [2020-12-22 19:42:42,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8839 states. [2020-12-22 19:42:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 8837. [2020-12-22 19:42:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8837 states. [2020-12-22 19:42:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8837 states to 8837 states and 12547 transitions. [2020-12-22 19:42:42,734 INFO L78 Accepts]: Start accepts. Automaton has 8837 states and 12547 transitions. Word has length 26 [2020-12-22 19:42:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:42,735 INFO L481 AbstractCegarLoop]: Abstraction has 8837 states and 12547 transitions. [2020-12-22 19:42:42,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 8837 states and 12547 transitions. [2020-12-22 19:42:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:42,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:42,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:42,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 19:42:42,749 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1691188181, now seen corresponding path program 1 times [2020-12-22 19:42:42,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:42,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341765127] [2020-12-22 19:42:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:42,833 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 19:42:42,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341765127] [2020-12-22 19:42:42,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:42,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:42,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207562143] [2020-12-22 19:42:42,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:42,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:42,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:42,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,841 INFO L87 Difference]: Start difference. First operand 8837 states and 12547 transitions. Second operand 3 states. [2020-12-22 19:42:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:42,885 INFO L93 Difference]: Finished difference Result 8967 states and 12548 transitions. [2020-12-22 19:42:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:42,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:42,911 INFO L225 Difference]: With dead ends: 8967 [2020-12-22 19:42:42,912 INFO L226 Difference]: Without dead ends: 8967 [2020-12-22 19:42:42,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8967 states. [2020-12-22 19:42:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8967 to 8965. [2020-12-22 19:42:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8965 states. [2020-12-22 19:42:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8965 states to 8965 states and 12547 transitions. [2020-12-22 19:42:43,191 INFO L78 Accepts]: Start accepts. Automaton has 8965 states and 12547 transitions. Word has length 27 [2020-12-22 19:42:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,192 INFO L481 AbstractCegarLoop]: Abstraction has 8965 states and 12547 transitions. [2020-12-22 19:42:43,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 8965 states and 12547 transitions. [2020-12-22 19:42:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:43,219 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:43,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:43,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 19:42:43,220 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1582710761, now seen corresponding path program 1 times [2020-12-22 19:42:43,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:43,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342377853] [2020-12-22 19:42:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,273 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 19:42:43,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342377853] [2020-12-22 19:42:43,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744182039] [2020-12-22 19:42:43,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,275 INFO L87 Difference]: Start difference. First operand 8965 states and 12547 transitions. Second operand 3 states. [2020-12-22 19:42:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:43,342 INFO L93 Difference]: Finished difference Result 15367 states and 21636 transitions. [2020-12-22 19:42:43,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:43,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:43,500 INFO L225 Difference]: With dead ends: 15367 [2020-12-22 19:42:43,500 INFO L226 Difference]: Without dead ends: 15367 [2020-12-22 19:42:43,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2020-12-22 19:42:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 13317. [2020-12-22 19:42:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13317 states. [2020-12-22 19:42:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13317 states to 13317 states and 18051 transitions. [2020-12-22 19:42:43,883 INFO L78 Accepts]: Start accepts. Automaton has 13317 states and 18051 transitions. Word has length 27 [2020-12-22 19:42:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:43,883 INFO L481 AbstractCegarLoop]: Abstraction has 13317 states and 18051 transitions. [2020-12-22 19:42:43,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 13317 states and 18051 transitions. [2020-12-22 19:42:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 19:42:43,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:43,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:43,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 19:42:43,912 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:43,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:43,913 INFO L82 PathProgramCache]: Analyzing trace with hash 302847083, now seen corresponding path program 1 times [2020-12-22 19:42:43,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:43,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966383216] [2020-12-22 19:42:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:43,937 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 19:42:43,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966383216] [2020-12-22 19:42:43,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:43,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:43,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990937156] [2020-12-22 19:42:43,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:43,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:43,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:43,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:43,940 INFO L87 Difference]: Start difference. First operand 13317 states and 18051 transitions. Second operand 3 states. [2020-12-22 19:42:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:44,115 INFO L93 Difference]: Finished difference Result 17415 states and 23300 transitions. [2020-12-22 19:42:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:44,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 19:42:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:44,161 INFO L225 Difference]: With dead ends: 17415 [2020-12-22 19:42:44,161 INFO L226 Difference]: Without dead ends: 17415 [2020-12-22 19:42:44,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2020-12-22 19:42:44,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 17413. [2020-12-22 19:42:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17413 states. [2020-12-22 19:42:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 23299 transitions. [2020-12-22 19:42:44,577 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 23299 transitions. Word has length 27 [2020-12-22 19:42:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:44,577 INFO L481 AbstractCegarLoop]: Abstraction has 17413 states and 23299 transitions. [2020-12-22 19:42:44,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 23299 transitions. [2020-12-22 19:42:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:44,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:44,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:44,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 19:42:44,600 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:44,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1819608763, now seen corresponding path program 1 times [2020-12-22 19:42:44,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:44,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417994208] [2020-12-22 19:42:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:44,635 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 19:42:44,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417994208] [2020-12-22 19:42:44,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:44,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:44,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501490022] [2020-12-22 19:42:44,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:44,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:44,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:44,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,638 INFO L87 Difference]: Start difference. First operand 17413 states and 23299 transitions. Second operand 3 states. [2020-12-22 19:42:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:44,796 INFO L93 Difference]: Finished difference Result 17671 states and 23300 transitions. [2020-12-22 19:42:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:44,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:44,835 INFO L225 Difference]: With dead ends: 17671 [2020-12-22 19:42:44,835 INFO L226 Difference]: Without dead ends: 17671 [2020-12-22 19:42:44,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:44,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17671 states. [2020-12-22 19:42:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17671 to 17669. [2020-12-22 19:42:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17669 states. [2020-12-22 19:42:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17669 states to 17669 states and 23299 transitions. [2020-12-22 19:42:45,210 INFO L78 Accepts]: Start accepts. Automaton has 17669 states and 23299 transitions. Word has length 28 [2020-12-22 19:42:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:45,210 INFO L481 AbstractCegarLoop]: Abstraction has 17669 states and 23299 transitions. [2020-12-22 19:42:45,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 17669 states and 23299 transitions. [2020-12-22 19:42:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:45,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:45,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:45,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 19:42:45,238 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash 798540409, now seen corresponding path program 1 times [2020-12-22 19:42:45,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:45,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727507631] [2020-12-22 19:42:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:45,267 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 19:42:45,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727507631] [2020-12-22 19:42:45,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:45,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:45,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115274590] [2020-12-22 19:42:45,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:45,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:45,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:45,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:45,269 INFO L87 Difference]: Start difference. First operand 17669 states and 23299 transitions. Second operand 3 states. [2020-12-22 19:42:45,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:45,524 INFO L93 Difference]: Finished difference Result 29703 states and 39172 transitions. [2020-12-22 19:42:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:45,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:45,620 INFO L225 Difference]: With dead ends: 29703 [2020-12-22 19:42:45,620 INFO L226 Difference]: Without dead ends: 29703 [2020-12-22 19:42:45,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29703 states. [2020-12-22 19:42:46,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29703 to 26629. [2020-12-22 19:42:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26629 states. [2020-12-22 19:42:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26629 states to 26629 states and 34051 transitions. [2020-12-22 19:42:46,223 INFO L78 Accepts]: Start accepts. Automaton has 26629 states and 34051 transitions. Word has length 28 [2020-12-22 19:42:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:46,223 INFO L481 AbstractCegarLoop]: Abstraction has 26629 states and 34051 transitions. [2020-12-22 19:42:46,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:46,223 INFO L276 IsEmpty]: Start isEmpty. Operand 26629 states and 34051 transitions. [2020-12-22 19:42:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 19:42:46,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:46,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:46,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 19:42:46,256 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:46,256 INFO L82 PathProgramCache]: Analyzing trace with hash -481323269, now seen corresponding path program 1 times [2020-12-22 19:42:46,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:46,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019767554] [2020-12-22 19:42:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:46,275 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 19:42:46,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019767554] [2020-12-22 19:42:46,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:46,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:46,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096905882] [2020-12-22 19:42:46,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:46,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:46,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:46,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:46,278 INFO L87 Difference]: Start difference. First operand 26629 states and 34051 transitions. Second operand 3 states. [2020-12-22 19:42:46,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:46,582 INFO L93 Difference]: Finished difference Result 34311 states and 43012 transitions. [2020-12-22 19:42:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:46,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 19:42:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:46,817 INFO L225 Difference]: With dead ends: 34311 [2020-12-22 19:42:46,818 INFO L226 Difference]: Without dead ends: 34311 [2020-12-22 19:42:46,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34311 states. [2020-12-22 19:42:47,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34311 to 34309. [2020-12-22 19:42:47,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34309 states. [2020-12-22 19:42:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34309 states to 34309 states and 43011 transitions. [2020-12-22 19:42:47,650 INFO L78 Accepts]: Start accepts. Automaton has 34309 states and 43011 transitions. Word has length 28 [2020-12-22 19:42:47,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:47,650 INFO L481 AbstractCegarLoop]: Abstraction has 34309 states and 43011 transitions. [2020-12-22 19:42:47,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 34309 states and 43011 transitions. [2020-12-22 19:42:47,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:42:47,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:47,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:47,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 19:42:47,676 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:47,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:47,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1014835328, now seen corresponding path program 1 times [2020-12-22 19:42:47,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:47,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280288589] [2020-12-22 19:42:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:47,697 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 19:42:47,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280288589] [2020-12-22 19:42:47,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:47,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:47,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392830570] [2020-12-22 19:42:47,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:47,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:47,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:47,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:47,699 INFO L87 Difference]: Start difference. First operand 34309 states and 43011 transitions. Second operand 3 states. [2020-12-22 19:42:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:47,963 INFO L93 Difference]: Finished difference Result 34823 states and 43012 transitions. [2020-12-22 19:42:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:47,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 19:42:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:48,036 INFO L225 Difference]: With dead ends: 34823 [2020-12-22 19:42:48,036 INFO L226 Difference]: Without dead ends: 34823 [2020-12-22 19:42:48,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:48,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34823 states. [2020-12-22 19:42:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34823 to 34821. [2020-12-22 19:42:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34821 states. [2020-12-22 19:42:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34821 states to 34821 states and 43011 transitions. [2020-12-22 19:42:48,722 INFO L78 Accepts]: Start accepts. Automaton has 34821 states and 43011 transitions. Word has length 29 [2020-12-22 19:42:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:48,722 INFO L481 AbstractCegarLoop]: Abstraction has 34821 states and 43011 transitions. [2020-12-22 19:42:48,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 34821 states and 43011 transitions. [2020-12-22 19:42:48,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:42:48,751 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:48,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:48,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 19:42:48,752 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:48,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:48,753 INFO L82 PathProgramCache]: Analyzing trace with hash -2035903682, now seen corresponding path program 1 times [2020-12-22 19:42:48,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:48,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947729770] [2020-12-22 19:42:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:48,778 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 19:42:48,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947729770] [2020-12-22 19:42:48,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:48,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:48,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394175807] [2020-12-22 19:42:48,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:48,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:48,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:48,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:48,782 INFO L87 Difference]: Start difference. First operand 34821 states and 43011 transitions. Second operand 3 states. [2020-12-22 19:42:49,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:49,174 INFO L93 Difference]: Finished difference Result 67591 states and 79876 transitions. [2020-12-22 19:42:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:49,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 19:42:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:49,327 INFO L225 Difference]: With dead ends: 67591 [2020-12-22 19:42:49,327 INFO L226 Difference]: Without dead ends: 67591 [2020-12-22 19:42:49,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:49,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67591 states. [2020-12-22 19:42:50,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67591 to 67589. [2020-12-22 19:42:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67589 states. [2020-12-22 19:42:50,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 79875 transitions. [2020-12-22 19:42:50,922 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 79875 transitions. Word has length 29 [2020-12-22 19:42:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:50,922 INFO L481 AbstractCegarLoop]: Abstraction has 67589 states and 79875 transitions. [2020-12-22 19:42:50,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:50,922 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 79875 transitions. [2020-12-22 19:42:50,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 19:42:50,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:50,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:50,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 19:42:50,969 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash -756040004, now seen corresponding path program 1 times [2020-12-22 19:42:50,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:50,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030025594] [2020-12-22 19:42:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:50,989 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 19:42:50,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030025594] [2020-12-22 19:42:50,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:50,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:50,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672679687] [2020-12-22 19:42:50,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:50,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:50,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:50,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:50,992 INFO L87 Difference]: Start difference. First operand 67589 states and 79875 transitions. Second operand 3 states. [2020-12-22 19:42:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:51,211 INFO L93 Difference]: Finished difference Result 71687 states and 84996 transitions. [2020-12-22 19:42:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:51,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-22 19:42:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:51,350 INFO L225 Difference]: With dead ends: 71687 [2020-12-22 19:42:51,350 INFO L226 Difference]: Without dead ends: 71687 [2020-12-22 19:42:51,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71687 states. [2020-12-22 19:42:52,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71687 to 67589. [2020-12-22 19:42:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67589 states. [2020-12-22 19:42:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67589 states to 67589 states and 78851 transitions. [2020-12-22 19:42:52,732 INFO L78 Accepts]: Start accepts. Automaton has 67589 states and 78851 transitions. Word has length 29 [2020-12-22 19:42:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:52,732 INFO L481 AbstractCegarLoop]: Abstraction has 67589 states and 78851 transitions. [2020-12-22 19:42:52,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:52,732 INFO L276 IsEmpty]: Start isEmpty. Operand 67589 states and 78851 transitions. [2020-12-22 19:42:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:42:52,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:52,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:52,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 19:42:52,777 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:52,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:52,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1311711408, now seen corresponding path program 1 times [2020-12-22 19:42:52,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:52,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223597504] [2020-12-22 19:42:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:52,803 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 19:42:52,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223597504] [2020-12-22 19:42:52,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:52,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:52,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149446373] [2020-12-22 19:42:52,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:52,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:52,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:52,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:52,809 INFO L87 Difference]: Start difference. First operand 67589 states and 78851 transitions. Second operand 3 states. [2020-12-22 19:42:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:53,534 INFO L93 Difference]: Finished difference Result 109573 states and 124931 transitions. [2020-12-22 19:42:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:53,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 19:42:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:53,891 INFO L225 Difference]: With dead ends: 109573 [2020-12-22 19:42:53,891 INFO L226 Difference]: Without dead ends: 109573 [2020-12-22 19:42:53,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:53,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109573 states. [2020-12-22 19:42:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109573 to 105477. [2020-12-22 19:42:55,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105477 states. [2020-12-22 19:42:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105477 states to 105477 states and 120835 transitions. [2020-12-22 19:42:55,471 INFO L78 Accepts]: Start accepts. Automaton has 105477 states and 120835 transitions. Word has length 30 [2020-12-22 19:42:55,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:55,472 INFO L481 AbstractCegarLoop]: Abstraction has 105477 states and 120835 transitions. [2020-12-22 19:42:55,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 105477 states and 120835 transitions. [2020-12-22 19:42:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 19:42:56,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 19:42:56,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 19:42:56,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 19:42:56,108 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-22 19:42:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 19:42:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash 31847730, now seen corresponding path program 1 times [2020-12-22 19:42:56,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 19:42:56,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264049530] [2020-12-22 19:42:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 19:42:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 19:42:56,156 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 19:42:56,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264049530] [2020-12-22 19:42:56,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 19:42:56,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 19:42:56,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157300848] [2020-12-22 19:42:56,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 19:42:56,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 19:42:56,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 19:42:56,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:56,162 INFO L87 Difference]: Start difference. First operand 105477 states and 120835 transitions. Second operand 3 states. [2020-12-22 19:42:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 19:42:56,616 INFO L93 Difference]: Finished difference Result 132099 states and 145410 transitions. [2020-12-22 19:42:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 19:42:56,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 19:42:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 19:42:56,617 INFO L225 Difference]: With dead ends: 132099 [2020-12-22 19:42:56,617 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 19:42:56,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 19:42:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 19:42:56,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 19:42:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 19:42:56,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 19:42:56,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-12-22 19:42:56,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 19:42:56,618 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 19:42:56,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 19:42:56,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 19:42:56,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 19:42:56,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 19:42:56,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:42:56 BoogieIcfgContainer [2020-12-22 19:42:56,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 19:42:56,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 19:42:56,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 19:42:56,626 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 19:42:56,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:42:38" (3/4) ... [2020-12-22 19:42:56,631 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 19:42:56,646 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 19:42:56,647 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 19:42:56,647 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-22 19:42:56,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 19:42:56,720 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_12.c-witness.graphml [2020-12-22 19:42:56,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 19:42:56,726 INFO L168 Benchmark]: Toolchain (without parser) took 19462.60 ms. Allocated memory was 156.2 MB in the beginning and 6.9 GB in the end (delta: 6.7 GB). Free memory was 131.9 MB in the beginning and 5.6 GB in the end (delta: -5.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2020-12-22 19:42:56,727 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 156.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 19:42:56,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.51 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 121.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:56,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.26 ms. Allocated memory is still 156.2 MB. Free memory was 120.9 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:56,730 INFO L168 Benchmark]: Boogie Preprocessor took 33.08 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 117.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:56,730 INFO L168 Benchmark]: RCFGBuilder took 764.39 ms. Allocated memory is still 156.2 MB. Free memory was 117.8 MB in the beginning and 128.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:56,730 INFO L168 Benchmark]: TraceAbstraction took 18214.42 ms. Allocated memory was 156.2 MB in the beginning and 6.9 GB in the end (delta: 6.7 GB). Free memory was 128.6 MB in the beginning and 5.7 GB in the end (delta: -5.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. [2020-12-22 19:42:56,731 INFO L168 Benchmark]: Witness Printer took 94.86 ms. Allocated memory is still 6.9 GB. Free memory was 5.7 GB in the beginning and 5.6 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 19:42:56,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 156.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.51 ms. Allocated memory is still 156.2 MB. Free memory was 131.5 MB in the beginning and 121.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.26 ms. Allocated memory is still 156.2 MB. Free memory was 120.9 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.08 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 117.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 764.39 ms. Allocated memory is still 156.2 MB. Free memory was 117.8 MB in the beginning and 128.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 18214.42 ms. Allocated memory was 156.2 MB in the beginning and 6.9 GB in the end (delta: 6.7 GB). Free memory was 128.6 MB in the beginning and 5.7 GB in the end (delta: -5.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 8.0 GB. * Witness Printer took 94.86 ms. Allocated memory is still 6.9 GB. Free memory was 5.7 GB in the beginning and 5.6 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 191]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.1s, OverallIterations: 35, TraceHistogramMax: 1, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3384 SDtfs, 1699 SDslu, 2170 SDs, 0 SdLazy, 176 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105477occurred in iteration=34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.6s AutomataMinimizationTime, 35 MinimizatonAttempts, 16418 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 787 ConstructedInterpolants, 0 QuantifiedInterpolants, 40589 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 35 InterpolantComputations, 35 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...