/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:14:39,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:14:39,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:14:39,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:14:39,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:14:39,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:14:39,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:14:39,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:14:39,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:14:39,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:14:39,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:14:39,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:14:39,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:14:39,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:14:39,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:14:39,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:14:39,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:14:39,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:14:39,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:14:39,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:14:39,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:14:39,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:14:39,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:14:39,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:14:39,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:14:39,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:14:39,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:14:39,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:14:39,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:14:39,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:14:39,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:14:39,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:14:39,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:14:39,325 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:14:39,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:14:39,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:14:39,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:14:39,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:14:39,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:14:39,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:14:39,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:14:39,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:14:39,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:14:39,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:14:39,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:14:39,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:14:39,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:14:39,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:14:39,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:14:39,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:14:39,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:14:39,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:14:39,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:14:39,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:14:39,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:14:39,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:14:39,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:14:39,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:14:39,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:14:39,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:14:39,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:14:39,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:14:39,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:14:39,752 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:14:39,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-10-23 18:14:39,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc519146/0fee4182e41649e8b746f8c1e6e2be6b/FLAGcdd51d2b8 [2020-10-23 18:14:40,382 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:14:40,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-10-23 18:14:40,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc519146/0fee4182e41649e8b746f8c1e6e2be6b/FLAGcdd51d2b8 [2020-10-23 18:14:40,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bc519146/0fee4182e41649e8b746f8c1e6e2be6b [2020-10-23 18:14:40,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:14:40,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:14:40,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:14:40,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:14:40,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:14:40,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:14:40" (1/1) ... [2020-10-23 18:14:40,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2020915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:40, skipping insertion in model container [2020-10-23 18:14:40,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:14:40" (1/1) ... [2020-10-23 18:14:40,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:14:40,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:14:41,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:14:41,034 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:14:41,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:14:41,067 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:14:41,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41 WrapperNode [2020-10-23 18:14:41,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:14:41,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:14:41,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:14:41,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:14:41,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (1/1) ... [2020-10-23 18:14:41,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (1/1) ... [2020-10-23 18:14:41,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (1/1) ... [2020-10-23 18:14:41,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (1/1) ... [2020-10-23 18:14:41,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (1/1) ... [2020-10-23 18:14:41,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (1/1) ... [2020-10-23 18:14:41,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (1/1) ... [2020-10-23 18:14:41,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:14:41,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:14:41,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:14:41,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:14:41,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (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 [2020-10-23 18:14:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:14:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:14:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:14:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-23 18:14:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-23 18:14:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:14:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:14:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:14:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:14:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:14:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:14:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-23 18:14:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-23 18:14:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:14:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:14:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:14:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:14:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:14:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:14:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:14:41,471 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:14:41,472 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:14:41,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:14:41 BoogieIcfgContainer [2020-10-23 18:14:41,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:14:41,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:14:41,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:14:41,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:14:41,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:14:40" (1/3) ... [2020-10-23 18:14:41,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abf2e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:14:41, skipping insertion in model container [2020-10-23 18:14:41,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:14:41" (2/3) ... [2020-10-23 18:14:41,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abf2e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:14:41, skipping insertion in model container [2020-10-23 18:14:41,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:14:41" (3/3) ... [2020-10-23 18:14:41,484 INFO L111 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-10-23 18:14:41,497 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:14:41,502 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:14:41,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:14:41,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:14:41,568 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:14:41,568 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:14:41,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:14:41,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:14:41,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:14:41,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:14:41,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:14:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-23 18:14:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:14:41,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:41,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:41,612 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash 219823047, now seen corresponding path program 1 times [2020-10-23 18:14:41,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:41,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843224167] [2020-10-23 18:14:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:42,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:14:42,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843224167] [2020-10-23 18:14:42,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:14:42,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:14:42,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063047279] [2020-10-23 18:14:42,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:14:42,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:42,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:14:42,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:14:42,128 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2020-10-23 18:14:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:42,568 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2020-10-23 18:14:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:14:42,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-23 18:14:42,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:42,581 INFO L225 Difference]: With dead ends: 53 [2020-10-23 18:14:42,582 INFO L226 Difference]: Without dead ends: 32 [2020-10-23 18:14:42,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:14:42,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-23 18:14:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-23 18:14:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 18:14:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-23 18:14:42,643 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 15 [2020-10-23 18:14:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:42,644 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-23 18:14:42,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:14:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-23 18:14:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:14:42,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:42,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:42,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:14:42,648 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:42,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:42,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1220716726, now seen corresponding path program 1 times [2020-10-23 18:14:42,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:42,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520603626] [2020-10-23 18:14:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:14:42,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520603626] [2020-10-23 18:14:42,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:14:42,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:14:42,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831403948] [2020-10-23 18:14:42,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:14:42,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:42,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:14:42,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:14:42,795 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 6 states. [2020-10-23 18:14:43,045 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 18:14:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:43,184 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-10-23 18:14:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:14:43,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-23 18:14:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:43,187 INFO L225 Difference]: With dead ends: 39 [2020-10-23 18:14:43,187 INFO L226 Difference]: Without dead ends: 34 [2020-10-23 18:14:43,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:14:43,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-23 18:14:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-23 18:14:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-23 18:14:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-23 18:14:43,201 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 16 [2020-10-23 18:14:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:43,202 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-23 18:14:43,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:14:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-23 18:14:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 18:14:43,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:43,204 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:43,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:14:43,204 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:43,205 INFO L82 PathProgramCache]: Analyzing trace with hash 2083135015, now seen corresponding path program 1 times [2020-10-23 18:14:43,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:43,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268182564] [2020-10-23 18:14:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:43,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:43,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:43,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:43,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 18:14:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:14:43,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268182564] [2020-10-23 18:14:43,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617903470] [2020-10-23 18:14:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:43,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-23 18:14:43,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:14:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:14:43,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:14:43,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-23 18:14:43,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756091496] [2020-10-23 18:14:43,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 18:14:43,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:43,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 18:14:43,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:14:43,578 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 11 states. [2020-10-23 18:14:44,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:44,132 INFO L93 Difference]: Finished difference Result 61 states and 81 transitions. [2020-10-23 18:14:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 18:14:44,133 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-10-23 18:14:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:44,135 INFO L225 Difference]: With dead ends: 61 [2020-10-23 18:14:44,135 INFO L226 Difference]: Without dead ends: 36 [2020-10-23 18:14:44,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-10-23 18:14:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-23 18:14:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-23 18:14:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 18:14:44,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-23 18:14:44,147 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 28 [2020-10-23 18:14:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:44,147 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-23 18:14:44,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 18:14:44,148 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-23 18:14:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:14:44,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:44,149 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:44,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:14:44,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:44,369 INFO L82 PathProgramCache]: Analyzing trace with hash 752879968, now seen corresponding path program 1 times [2020-10-23 18:14:44,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:44,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167917502] [2020-10-23 18:14:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:44,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:44,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:44,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:14:44,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167917502] [2020-10-23 18:14:44,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098586974] [2020-10-23 18:14:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:44,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-23 18:14:44,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:14:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:14:44,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:14:44,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2020-10-23 18:14:44,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645683225] [2020-10-23 18:14:44,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:14:44,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:44,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:14:44,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:14:44,700 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 10 states. [2020-10-23 18:14:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:45,372 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2020-10-23 18:14:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:14:45,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-23 18:14:45,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:45,380 INFO L225 Difference]: With dead ends: 57 [2020-10-23 18:14:45,381 INFO L226 Difference]: Without dead ends: 52 [2020-10-23 18:14:45,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-23 18:14:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-23 18:14:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-10-23 18:14:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 18:14:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2020-10-23 18:14:45,402 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 29 [2020-10-23 18:14:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:45,403 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2020-10-23 18:14:45,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:14:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2020-10-23 18:14:45,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 18:14:45,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:45,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:45,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:45,609 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:45,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2070859795, now seen corresponding path program 1 times [2020-10-23 18:14:45,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:45,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644749768] [2020-10-23 18:14:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:45,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:45,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:45,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:45,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 18:14:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:45,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 18:14:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-23 18:14:45,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644749768] [2020-10-23 18:14:45,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934908718] [2020-10-23 18:14:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:45,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-23 18:14:45,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:14:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 18:14:45,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:14:45,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2020-10-23 18:14:45,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148925706] [2020-10-23 18:14:45,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 18:14:45,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:45,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 18:14:45,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-23 18:14:45,996 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand 12 states. [2020-10-23 18:14:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:47,010 INFO L93 Difference]: Finished difference Result 111 states and 173 transitions. [2020-10-23 18:14:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 18:14:47,014 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-23 18:14:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:47,019 INFO L225 Difference]: With dead ends: 111 [2020-10-23 18:14:47,019 INFO L226 Difference]: Without dead ends: 68 [2020-10-23 18:14:47,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-10-23 18:14:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-23 18:14:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-23 18:14:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-23 18:14:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions. [2020-10-23 18:14:47,060 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 41 [2020-10-23 18:14:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:47,061 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 97 transitions. [2020-10-23 18:14:47,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 18:14:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions. [2020-10-23 18:14:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-23 18:14:47,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:47,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:47,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:47,270 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:47,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:47,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1960607334, now seen corresponding path program 1 times [2020-10-23 18:14:47,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:47,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330279652] [2020-10-23 18:14:47,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:47,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:47,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:47,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:47,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:47,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 18:14:47,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330279652] [2020-10-23 18:14:47,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064844826] [2020-10-23 18:14:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:47,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-23 18:14:47,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:14:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-23 18:14:47,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:14:47,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-10-23 18:14:47,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841790021] [2020-10-23 18:14:47,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 18:14:47,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:47,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 18:14:47,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:14:47,662 INFO L87 Difference]: Start difference. First operand 68 states and 97 transitions. Second operand 14 states. [2020-10-23 18:14:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:49,081 INFO L93 Difference]: Finished difference Result 183 states and 327 transitions. [2020-10-23 18:14:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-23 18:14:49,082 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-23 18:14:49,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:49,092 INFO L225 Difference]: With dead ends: 183 [2020-10-23 18:14:49,092 INFO L226 Difference]: Without dead ends: 122 [2020-10-23 18:14:49,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2020-10-23 18:14:49,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-23 18:14:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2020-10-23 18:14:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-23 18:14:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 171 transitions. [2020-10-23 18:14:49,140 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 171 transitions. Word has length 42 [2020-10-23 18:14:49,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:49,140 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 171 transitions. [2020-10-23 18:14:49,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 18:14:49,140 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 171 transitions. [2020-10-23 18:14:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-23 18:14:49,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:49,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:49,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:49,359 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash -751460799, now seen corresponding path program 1 times [2020-10-23 18:14:49,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:49,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314422346] [2020-10-23 18:14:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-23 18:14:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-23 18:14:49,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314422346] [2020-10-23 18:14:49,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706768525] [2020-10-23 18:14:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:49,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-23 18:14:49,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:14:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-23 18:14:49,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:14:49,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2020-10-23 18:14:49,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217640436] [2020-10-23 18:14:49,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 18:14:49,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 18:14:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:14:49,893 INFO L87 Difference]: Start difference. First operand 108 states and 171 transitions. Second operand 15 states. [2020-10-23 18:14:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:51,468 INFO L93 Difference]: Finished difference Result 261 states and 501 transitions. [2020-10-23 18:14:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-23 18:14:51,469 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-23 18:14:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:51,473 INFO L225 Difference]: With dead ends: 261 [2020-10-23 18:14:51,473 INFO L226 Difference]: Without dead ends: 160 [2020-10-23 18:14:51,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2020-10-23 18:14:51,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-23 18:14:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 114. [2020-10-23 18:14:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-23 18:14:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 182 transitions. [2020-10-23 18:14:51,507 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 182 transitions. Word has length 56 [2020-10-23 18:14:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:51,508 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 182 transitions. [2020-10-23 18:14:51,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 18:14:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 182 transitions. [2020-10-23 18:14:51,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-23 18:14:51,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:51,513 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:51,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-23 18:14:51,727 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:51,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:51,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2107233529, now seen corresponding path program 1 times [2020-10-23 18:14:51,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:51,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070113470] [2020-10-23 18:14:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:51,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:51,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:14:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-23 18:14:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:14:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-23 18:14:52,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070113470] [2020-10-23 18:14:52,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975641355] [2020-10-23 18:14:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:52,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-23 18:14:52,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:14:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-23 18:14:52,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:14:52,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2020-10-23 18:14:52,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018656358] [2020-10-23 18:14:52,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 18:14:52,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:52,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 18:14:52,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-23 18:14:52,427 INFO L87 Difference]: Start difference. First operand 114 states and 182 transitions. Second operand 17 states. [2020-10-23 18:14:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:54,384 INFO L93 Difference]: Finished difference Result 246 states and 468 transitions. [2020-10-23 18:14:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-23 18:14:54,384 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 112 [2020-10-23 18:14:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:54,388 INFO L225 Difference]: With dead ends: 246 [2020-10-23 18:14:54,388 INFO L226 Difference]: Without dead ends: 112 [2020-10-23 18:14:54,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=263, Invalid=1377, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 18:14:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-23 18:14:54,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 89. [2020-10-23 18:14:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-23 18:14:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-10-23 18:14:54,429 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 112 [2020-10-23 18:14:54,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:54,430 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-10-23 18:14:54,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 18:14:54,430 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-10-23 18:14:54,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-23 18:14:54,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:54,435 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 12, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:54,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:54,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:54,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1050683425, now seen corresponding path program 1 times [2020-10-23 18:14:54,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:54,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274821066] [2020-10-23 18:14:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:14:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-23 18:14:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 18:14:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:54,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:14:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-23 18:14:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 67 proven. 173 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2020-10-23 18:14:55,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274821066] [2020-10-23 18:14:55,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769658095] [2020-10-23 18:14:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:55,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 18:14:55,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:14:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 30 proven. 256 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2020-10-23 18:14:55,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:14:55,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2020-10-23 18:14:55,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151640224] [2020-10-23 18:14:55,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-23 18:14:55,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:55,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-23 18:14:55,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-23 18:14:55,478 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 18 states. [2020-10-23 18:14:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:14:57,626 INFO L93 Difference]: Finished difference Result 220 states and 378 transitions. [2020-10-23 18:14:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-23 18:14:57,627 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 168 [2020-10-23 18:14:57,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:14:57,630 INFO L225 Difference]: With dead ends: 220 [2020-10-23 18:14:57,630 INFO L226 Difference]: Without dead ends: 139 [2020-10-23 18:14:57,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=306, Invalid=1586, Unknown=0, NotChecked=0, Total=1892 [2020-10-23 18:14:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-23 18:14:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 119. [2020-10-23 18:14:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-23 18:14:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2020-10-23 18:14:57,671 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 168 [2020-10-23 18:14:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:14:57,671 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2020-10-23 18:14:57,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-23 18:14:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2020-10-23 18:14:57,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-23 18:14:57,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:14:57,677 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:14:57,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:57,878 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:14:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:14:57,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1578906910, now seen corresponding path program 1 times [2020-10-23 18:14:57,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:14:57,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014025009] [2020-10-23 18:14:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:14:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:57,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:14:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:57,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:14:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:14:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:14:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 18:14:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-23 18:14:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:14:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:14:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:14:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:14:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 153 proven. 211 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2020-10-23 18:14:58,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014025009] [2020-10-23 18:14:58,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350375803] [2020-10-23 18:14:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:14:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:14:58,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-23 18:14:58,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:14:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 65 proven. 353 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-23 18:14:58,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:14:58,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2020-10-23 18:14:58,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800595570] [2020-10-23 18:14:58,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-23 18:14:58,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:14:58,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-23 18:14:58,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-10-23 18:14:58,732 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand 19 states. [2020-10-23 18:15:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:15:01,155 INFO L93 Difference]: Finished difference Result 266 states and 453 transitions. [2020-10-23 18:15:01,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-23 18:15:01,157 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 206 [2020-10-23 18:15:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:15:01,162 INFO L225 Difference]: With dead ends: 266 [2020-10-23 18:15:01,163 INFO L226 Difference]: Without dead ends: 160 [2020-10-23 18:15:01,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=366, Invalid=1986, Unknown=0, NotChecked=0, Total=2352 [2020-10-23 18:15:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-23 18:15:01,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2020-10-23 18:15:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-23 18:15:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 229 transitions. [2020-10-23 18:15:01,184 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 229 transitions. Word has length 206 [2020-10-23 18:15:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:15:01,184 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 229 transitions. [2020-10-23 18:15:01,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-23 18:15:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 229 transitions. [2020-10-23 18:15:01,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-23 18:15:01,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:15:01,197 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 32, 31, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 14, 12, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:15:01,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-23 18:15:01,412 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:15:01,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:15:01,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1819044595, now seen corresponding path program 2 times [2020-10-23 18:15:01,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:15:01,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540505999] [2020-10-23 18:15:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:15:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:01,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:15:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:01,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:15:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:01,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:01,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:15:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:15:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-23 18:15:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-23 18:15:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-23 18:15:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7733 backedges. 286 proven. 920 refuted. 0 times theorem prover too weak. 6527 trivial. 0 not checked. [2020-10-23 18:15:02,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540505999] [2020-10-23 18:15:02,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530388461] [2020-10-23 18:15:02,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:15:03,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:15:03,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:15:03,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 18:15:03,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:15:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7733 backedges. 236 proven. 900 refuted. 0 times theorem prover too weak. 6597 trivial. 0 not checked. [2020-10-23 18:15:03,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:15:03,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2020-10-23 18:15:03,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446688564] [2020-10-23 18:15:03,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-23 18:15:03,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:15:03,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-23 18:15:03,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-23 18:15:03,573 INFO L87 Difference]: Start difference. First operand 150 states and 229 transitions. Second operand 18 states. [2020-10-23 18:15:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:15:05,614 INFO L93 Difference]: Finished difference Result 329 states and 540 transitions. [2020-10-23 18:15:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 18:15:05,615 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 522 [2020-10-23 18:15:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:15:05,620 INFO L225 Difference]: With dead ends: 329 [2020-10-23 18:15:05,620 INFO L226 Difference]: Without dead ends: 193 [2020-10-23 18:15:05,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=273, Invalid=1533, Unknown=0, NotChecked=0, Total=1806 [2020-10-23 18:15:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-23 18:15:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 150. [2020-10-23 18:15:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-23 18:15:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 220 transitions. [2020-10-23 18:15:05,648 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 220 transitions. Word has length 522 [2020-10-23 18:15:05,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:15:05,650 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 220 transitions. [2020-10-23 18:15:05,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-23 18:15:05,650 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 220 transitions. [2020-10-23 18:15:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-23 18:15:05,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:15:05,668 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 38, 38, 35, 32, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 19, 19, 19, 19, 16, 10, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:15:05,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:15:05,883 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:15:05,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:15:05,885 INFO L82 PathProgramCache]: Analyzing trace with hash 736074253, now seen corresponding path program 3 times [2020-10-23 18:15:05,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:15:05,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884964851] [2020-10-23 18:15:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:15:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:15:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:15:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 18:15:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:15:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:15:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 18:15:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-10-23 18:15:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9471 backedges. 548 proven. 1546 refuted. 0 times theorem prover too weak. 7377 trivial. 0 not checked. [2020-10-23 18:15:07,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884964851] [2020-10-23 18:15:07,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415057404] [2020-10-23 18:15:07,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:15:07,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2020-10-23 18:15:07,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:15:07,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 18:15:07,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:15:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9471 backedges. 3006 proven. 157 refuted. 0 times theorem prover too weak. 6308 trivial. 0 not checked. [2020-10-23 18:15:08,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:15:08,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 26 [2020-10-23 18:15:08,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928054778] [2020-10-23 18:15:08,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-23 18:15:08,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:15:08,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-23 18:15:08,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-23 18:15:08,366 INFO L87 Difference]: Start difference. First operand 150 states and 220 transitions. Second operand 26 states. [2020-10-23 18:15:12,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:15:12,903 INFO L93 Difference]: Finished difference Result 363 states and 602 transitions. [2020-10-23 18:15:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-23 18:15:12,904 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 574 [2020-10-23 18:15:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:15:12,910 INFO L225 Difference]: With dead ends: 363 [2020-10-23 18:15:12,910 INFO L226 Difference]: Without dead ends: 219 [2020-10-23 18:15:12,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=737, Invalid=5115, Unknown=0, NotChecked=0, Total=5852 [2020-10-23 18:15:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-23 18:15:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 165. [2020-10-23 18:15:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-23 18:15:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 228 transitions. [2020-10-23 18:15:12,940 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 228 transitions. Word has length 574 [2020-10-23 18:15:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:15:12,943 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 228 transitions. [2020-10-23 18:15:12,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-23 18:15:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 228 transitions. [2020-10-23 18:15:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2020-10-23 18:15:12,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:15:12,948 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:15:13,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:15:13,163 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:15:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:15:13,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1027134925, now seen corresponding path program 4 times [2020-10-23 18:15:13,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:15:13,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274049438] [2020-10-23 18:15:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:15:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:15:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:15:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 18:15:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:13,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 18:15:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:15:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 18:15:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 18:15:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:14,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 913 proven. 1781 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2020-10-23 18:15:15,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274049438] [2020-10-23 18:15:15,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796144291] [2020-10-23 18:15:15,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:15:15,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 18:15:15,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:15:15,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-23 18:15:15,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:15:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 1038 proven. 628 refuted. 0 times theorem prover too weak. 7747 trivial. 0 not checked. [2020-10-23 18:15:15,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:15:15,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 25 [2020-10-23 18:15:15,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724361540] [2020-10-23 18:15:15,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-23 18:15:15,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:15:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-23 18:15:15,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-10-23 18:15:15,714 INFO L87 Difference]: Start difference. First operand 165 states and 228 transitions. Second operand 25 states. [2020-10-23 18:15:19,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:15:19,870 INFO L93 Difference]: Finished difference Result 405 states and 650 transitions. [2020-10-23 18:15:19,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-23 18:15:19,871 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 574 [2020-10-23 18:15:19,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:15:19,876 INFO L225 Difference]: With dead ends: 405 [2020-10-23 18:15:19,876 INFO L226 Difference]: Without dead ends: 250 [2020-10-23 18:15:19,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1411 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=667, Invalid=4589, Unknown=0, NotChecked=0, Total=5256 [2020-10-23 18:15:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-23 18:15:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 201. [2020-10-23 18:15:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-23 18:15:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 291 transitions. [2020-10-23 18:15:19,915 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 291 transitions. Word has length 574 [2020-10-23 18:15:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:15:19,916 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 291 transitions. [2020-10-23 18:15:19,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-23 18:15:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 291 transitions. [2020-10-23 18:15:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-23 18:15:19,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:15:19,921 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:15:20,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-23 18:15:20,135 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:15:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:15:20,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1416391661, now seen corresponding path program 5 times [2020-10-23 18:15:20,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:15:20,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096229030] [2020-10-23 18:15:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:15:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:15:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:15:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 18:15:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 18:15:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:15:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 18:15:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 1102 proven. 902 refuted. 0 times theorem prover too weak. 3365 trivial. 0 not checked. [2020-10-23 18:15:21,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096229030] [2020-10-23 18:15:21,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724347653] [2020-10-23 18:15:21,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:15:21,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-23 18:15:21,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:15:21,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 18:15:21,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:15:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 918 proven. 135 refuted. 0 times theorem prover too weak. 4316 trivial. 0 not checked. [2020-10-23 18:15:22,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:15:22,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 29 [2020-10-23 18:15:22,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762686479] [2020-10-23 18:15:22,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-23 18:15:22,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:15:22,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-23 18:15:22,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2020-10-23 18:15:22,322 INFO L87 Difference]: Start difference. First operand 201 states and 291 transitions. Second operand 29 states. [2020-10-23 18:15:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:15:25,886 INFO L93 Difference]: Finished difference Result 421 states and 664 transitions. [2020-10-23 18:15:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-23 18:15:25,893 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 438 [2020-10-23 18:15:25,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:15:25,901 INFO L225 Difference]: With dead ends: 421 [2020-10-23 18:15:25,901 INFO L226 Difference]: Without dead ends: 243 [2020-10-23 18:15:25,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=533, Invalid=3627, Unknown=0, NotChecked=0, Total=4160 [2020-10-23 18:15:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-23 18:15:25,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 218. [2020-10-23 18:15:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-23 18:15:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 321 transitions. [2020-10-23 18:15:25,934 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 321 transitions. Word has length 438 [2020-10-23 18:15:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:15:25,935 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 321 transitions. [2020-10-23 18:15:25,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-23 18:15:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 321 transitions. [2020-10-23 18:15:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-23 18:15:25,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:15:25,938 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:15:26,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-23 18:15:26,155 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:15:26,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:15:26,156 INFO L82 PathProgramCache]: Analyzing trace with hash -924811821, now seen corresponding path program 6 times [2020-10-23 18:15:26,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:15:26,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417230915] [2020-10-23 18:15:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:15:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:15:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:15:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 18:15:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 18:15:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:26,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 18:15:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 18:15:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:15:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 18:15:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 18:15:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:15:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:15:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 694 proven. 802 refuted. 0 times theorem prover too weak. 2874 trivial. 0 not checked. [2020-10-23 18:15:27,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417230915] [2020-10-23 18:15:27,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713102352] [2020-10-23 18:15:27,353 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:15:27,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-10-23 18:15:27,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:15:27,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-23 18:15:27,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:15:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 586 proven. 92 refuted. 0 times theorem prover too weak. 3692 trivial. 0 not checked. [2020-10-23 18:15:27,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:15:27,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 25 [2020-10-23 18:15:27,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591364010] [2020-10-23 18:15:27,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-23 18:15:27,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:15:27,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-23 18:15:27,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-23 18:15:27,811 INFO L87 Difference]: Start difference. First operand 218 states and 321 transitions. Second operand 25 states. [2020-10-23 18:15:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:15:31,708 INFO L93 Difference]: Finished difference Result 463 states and 698 transitions. [2020-10-23 18:15:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-23 18:15:31,709 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 397 [2020-10-23 18:15:31,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:15:31,714 INFO L225 Difference]: With dead ends: 463 [2020-10-23 18:15:31,714 INFO L226 Difference]: Without dead ends: 268 [2020-10-23 18:15:31,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=620, Invalid=4492, Unknown=0, NotChecked=0, Total=5112 [2020-10-23 18:15:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-23 18:15:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 222. [2020-10-23 18:15:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-23 18:15:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 318 transitions. [2020-10-23 18:15:31,744 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 318 transitions. Word has length 397 [2020-10-23 18:15:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:15:31,745 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 318 transitions. [2020-10-23 18:15:31,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-23 18:15:31,745 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 318 transitions. [2020-10-23 18:15:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-23 18:15:31,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:15:31,749 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:15:31,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-23 18:15:31,964 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:15:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:15:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1277454648, now seen corresponding path program 7 times [2020-10-23 18:15:31,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:15:31,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179438402] [2020-10-23 18:15:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:15:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:15:32,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:15:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:15:32,111 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:15:32,255 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:15:32,255 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:15:32,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-23 18:15:32,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:15:32 BoogieIcfgContainer [2020-10-23 18:15:32,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:15:32,448 INFO L168 Benchmark]: Toolchain (without parser) took 51644.10 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 125.5 MB in the beginning and 674.3 MB in the end (delta: -548.9 MB). Peak memory consumption was 242.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:15:32,448 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:15:32,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.54 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 115.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:15:32,450 INFO L168 Benchmark]: Boogie Preprocessor took 32.99 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 114.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:15:32,450 INFO L168 Benchmark]: RCFGBuilder took 371.36 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 100.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:15:32,451 INFO L168 Benchmark]: TraceAbstraction took 50970.73 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 99.7 MB in the beginning and 674.3 MB in the end (delta: -574.7 MB). Peak memory consumption was 216.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:15:32,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.54 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 115.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.99 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 114.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 371.36 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 100.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 50970.73 ms. Allocated memory was 151.0 MB in the beginning and 941.6 MB in the end (delta: 790.6 MB). Free memory was 99.7 MB in the beginning and 674.3 MB in the end (delta: -574.7 MB). Peak memory consumption was 216.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L38] int x = 8; VAL [x=8] [L39] CALL, EXPR fibo1(x) VAL [\old(n)=8] [L10] COND FALSE !(n < 1) VAL [\old(n)=8, n=8] [L12] COND FALSE !(n == 1) VAL [\old(n)=8, n=8] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=7] [L20] COND FALSE !(n < 1) VAL [\old(n)=7, n=7] [L22] COND FALSE !(n == 1) VAL [\old(n)=7, n=7] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=6] [L10] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L12] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=5] [L20] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L22] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=5, fibo1(n-1)=3, n=5] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=5, fibo1(n-1)=3, fibo1(n-2)=2, n=5] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=6, fibo2(n-1)=5, n=6] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=6, fibo2(n-1)=5, fibo2(n-2)=3, n=6] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=7, fibo1(n-1)=8, n=7] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=7, fibo1(n-1)=8, fibo1(n-2)=5, n=7] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=8, fibo2(n-1)=13, n=8] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=6] [L20] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L22] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, fibo2(n-1)=3, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, fibo2(n-1)=3, fibo2(n-2)=2, n=5] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=6, fibo1(n-1)=5, n=6] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=6, fibo1(n-1)=5, fibo1(n-2)=3, n=6] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=8, fibo2(n-1)=13, fibo2(n-2)=8, n=8] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) VAL [fibo1(x)=21, x=8] [L39] int result = fibo1(x); [L40] COND TRUE result == 21 VAL [result=21, x=8] [L41] CALL reach_error() [L4] __assert_fail("0", "fibo_2calls_8-2.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.6s, OverallIterations: 16, TraceHistogramMax: 45, AutomataDifference: 30.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 559 SDtfs, 1622 SDslu, 1703 SDs, 0 SdLazy, 10090 SolverSat, 1913 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4656 GetRequests, 4082 SyntacticMatches, 3 SemanticMatches, 571 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7068 ImplicationChecksByTransitivity, 21.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 15 MinimizatonAttempts, 336 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 6870 NumberOfCodeBlocks, 6296 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 6377 ConstructedInterpolants, 0 QuantifiedInterpolants, 3547251 SizeOfPredicates, 76 NumberOfNonLiveVariables, 6472 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 67898/77016 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 incorrect! Received shutdown request...