/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/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:58:10,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:58:10,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:58:10,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:58:10,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:58:10,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:58:10,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:58:10,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:58:10,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:58:10,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:58:10,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:58:10,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:58:10,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:58:10,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:58:10,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:58:10,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:58:10,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:58:10,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:58:10,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:58:10,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:58:10,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:58:10,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:58:10,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:58:10,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:58:10,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:58:10,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:58:10,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:58:10,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:58:10,433 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 17:58:10,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:58:10,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:58:10,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:58:10,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:58:10,463 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:58:10,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:58:10,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:58:10,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:58:10,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:58:10,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:58:10,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:58:10,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:58:10,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:58:10,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:58:10,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:58:10,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:58:10,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:58:10,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:58:10,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:58:10,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:58:10,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:58:10,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:58:10,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:58:10,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:58:10,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:58:10,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:58:10,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:58:10,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:58:10,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:58:10,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:58:10,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:58:10,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:58:10,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:58:10,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:58:10,886 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:58:10,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-10-23 17:58:10,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac73a64be/f4b419a3fe2842fb8bcb415ee341fccf/FLAGdd81eab1f [2020-10-23 17:58:11,741 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:58:11,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-10-23 17:58:11,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac73a64be/f4b419a3fe2842fb8bcb415ee341fccf/FLAGdd81eab1f [2020-10-23 17:58:12,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac73a64be/f4b419a3fe2842fb8bcb415ee341fccf [2020-10-23 17:58:12,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:58:12,103 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:58:12,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:58:12,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:58:12,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:58:12,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd3882f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12, skipping insertion in model container [2020-10-23 17:58:12,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:58:12,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:58:12,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:58:12,331 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:58:12,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:58:12,371 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:58:12,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12 WrapperNode [2020-10-23 17:58:12,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:58:12,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:58:12,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:58:12,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:58:12,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (1/1) ... [2020-10-23 17:58:12,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:58:12,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:58:12,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:58:12,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:58:12,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (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 17:58:12,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:58:12,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:58:12,501 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:58:12,501 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-10-23 17:58:12,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:58:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:58:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:58:12,501 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:58:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:58:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 17:58:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-10-23 17:58:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:58:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:58:12,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:58:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:58:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:58:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:58:12,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:58:12,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:58:12,804 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 17:58:12,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:58:12 BoogieIcfgContainer [2020-10-23 17:58:12,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:58:12,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:58:12,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:58:12,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:58:12,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:58:12" (1/3) ... [2020-10-23 17:58:12,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174f22fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:58:12, skipping insertion in model container [2020-10-23 17:58:12,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:58:12" (2/3) ... [2020-10-23 17:58:12,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174f22fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:58:12, skipping insertion in model container [2020-10-23 17:58:12,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:58:12" (3/3) ... [2020-10-23 17:58:12,819 INFO L111 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-10-23 17:58:12,844 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:58:12,859 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:58:12,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:58:12,962 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:58:12,962 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:58:12,963 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:58:12,963 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:58:12,963 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:58:12,963 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:58:12,963 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:58:12,964 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:58:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-23 17:58:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 17:58:13,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:13,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:13,003 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:13,018 INFO L82 PathProgramCache]: Analyzing trace with hash -732444851, now seen corresponding path program 1 times [2020-10-23 17:58:13,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:13,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842641587] [2020-10-23 17:58:13,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:13,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:13,507 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 17:58:13,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842641587] [2020-10-23 17:58:13,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:58:13,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 17:58:13,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641006791] [2020-10-23 17:58:13,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 17:58:13,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:13,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 17:58:13,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 17:58:13,533 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states. [2020-10-23 17:58:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:13,830 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2020-10-23 17:58:13,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 17:58:13,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-23 17:58:13,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:13,844 INFO L225 Difference]: With dead ends: 42 [2020-10-23 17:58:13,844 INFO L226 Difference]: Without dead ends: 24 [2020-10-23 17:58:13,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 17:58:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-23 17:58:13,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-23 17:58:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-23 17:58:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-23 17:58:13,903 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2020-10-23 17:58:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:13,904 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-23 17:58:13,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 17:58:13,904 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-23 17:58:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-23 17:58:13,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:13,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:13,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:58:13,907 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:13,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:13,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1245142590, now seen corresponding path program 1 times [2020-10-23 17:58:13,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:13,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123251052] [2020-10-23 17:58:13,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:14,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:14,037 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 17:58:14,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123251052] [2020-10-23 17:58:14,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:58:14,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 17:58:14,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094478262] [2020-10-23 17:58:14,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 17:58:14,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:14,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 17:58:14,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 17:58:14,043 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2020-10-23 17:58:14,331 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-23 17:58:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:14,433 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-10-23 17:58:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 17:58:14,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-23 17:58:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:14,435 INFO L225 Difference]: With dead ends: 31 [2020-10-23 17:58:14,436 INFO L226 Difference]: Without dead ends: 26 [2020-10-23 17:58:14,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 17:58:14,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-23 17:58:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-23 17:58:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-23 17:58:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-23 17:58:14,447 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2020-10-23 17:58:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:14,448 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-23 17:58:14,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 17:58:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-23 17:58:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 17:58:14,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:14,449 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 17:58:14,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:58:14,450 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:14,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1261626143, now seen corresponding path program 1 times [2020-10-23 17:58:14,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:14,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471867559] [2020-10-23 17:58:14,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:14,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:14,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-23 17:58:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 17:58:14,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471867559] [2020-10-23 17:58:14,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209885508] [2020-10-23 17:58:14,593 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 17:58:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:14,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-23 17:58:14,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:14,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 17:58:14,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:14,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-10-23 17:58:14,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533702654] [2020-10-23 17:58:14,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 17:58:14,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:14,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 17:58:14,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-23 17:58:14,792 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 10 states. [2020-10-23 17:58:15,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:15,142 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-10-23 17:58:15,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 17:58:15,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-23 17:58:15,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:15,145 INFO L225 Difference]: With dead ends: 42 [2020-10-23 17:58:15,145 INFO L226 Difference]: Without dead ends: 26 [2020-10-23 17:58:15,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-23 17:58:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-23 17:58:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-23 17:58:15,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-23 17:58:15,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-23 17:58:15,155 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 29 [2020-10-23 17:58:15,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:15,156 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-23 17:58:15,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 17:58:15,156 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-23 17:58:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 17:58:15,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:15,158 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 17:58:15,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 17:58:15,373 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash -391232570, now seen corresponding path program 1 times [2020-10-23 17:58:15,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:15,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933729533] [2020-10-23 17:58:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:15,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:15,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 17:58:15,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933729533] [2020-10-23 17:58:15,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786823730] [2020-10-23 17:58:15,522 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 17:58:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:15,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-23 17:58:15,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-23 17:58:15,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:15,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-23 17:58:15,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108488179] [2020-10-23 17:58:15,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 17:58:15,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:15,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 17:58:15,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-23 17:58:15,627 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 8 states. [2020-10-23 17:58:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:16,030 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2020-10-23 17:58:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 17:58:16,031 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-23 17:58:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:16,033 INFO L225 Difference]: With dead ends: 45 [2020-10-23 17:58:16,034 INFO L226 Difference]: Without dead ends: 40 [2020-10-23 17:58:16,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-23 17:58:16,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-23 17:58:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-23 17:58:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-23 17:58:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2020-10-23 17:58:16,047 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 30 [2020-10-23 17:58:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:16,047 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2020-10-23 17:58:16,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 17:58:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2020-10-23 17:58:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 17:58:16,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:16,050 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:16,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:58:16,262 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:16,263 INFO L82 PathProgramCache]: Analyzing trace with hash -751727802, now seen corresponding path program 2 times [2020-10-23 17:58:16,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:16,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206608601] [2020-10-23 17:58:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:16,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:16,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:16,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-23 17:58:16,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206608601] [2020-10-23 17:58:16,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993028662] [2020-10-23 17:58:16,652 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 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 17:58:16,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 17:58:16,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:58:16,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-23 17:58:16,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-23 17:58:16,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:16,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-10-23 17:58:16,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856740935] [2020-10-23 17:58:16,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 17:58:16,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:16,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 17:58:16,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-23 17:58:16,827 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand 13 states. [2020-10-23 17:58:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:17,806 INFO L93 Difference]: Finished difference Result 75 states and 110 transitions. [2020-10-23 17:58:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 17:58:17,807 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 43 [2020-10-23 17:58:17,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:17,810 INFO L225 Difference]: With dead ends: 75 [2020-10-23 17:58:17,810 INFO L226 Difference]: Without dead ends: 41 [2020-10-23 17:58:17,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2020-10-23 17:58:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-23 17:58:17,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-23 17:58:17,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-23 17:58:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-23 17:58:17,824 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 43 [2020-10-23 17:58:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:17,824 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-23 17:58:17,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 17:58:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-23 17:58:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-23 17:58:17,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:17,827 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:18,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:58:18,031 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:18,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:18,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1063561970, now seen corresponding path program 3 times [2020-10-23 17:58:18,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:18,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631177777] [2020-10-23 17:58:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-23 17:58:18,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631177777] [2020-10-23 17:58:18,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905386487] [2020-10-23 17:58:18,365 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 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 17:58:18,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-23 17:58:18,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:58:18,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-23 17:58:18,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-23 17:58:18,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:18,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 11 [2020-10-23 17:58:18,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292842127] [2020-10-23 17:58:18,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 17:58:18,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:18,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 17:58:18,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-23 17:58:18,540 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 11 states. [2020-10-23 17:58:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:19,257 INFO L93 Difference]: Finished difference Result 91 states and 130 transitions. [2020-10-23 17:58:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 17:58:19,258 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-23 17:58:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:19,266 INFO L225 Difference]: With dead ends: 91 [2020-10-23 17:58:19,266 INFO L226 Difference]: Without dead ends: 53 [2020-10-23 17:58:19,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-23 17:58:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-23 17:58:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-23 17:58:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 17:58:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-10-23 17:58:19,298 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 71 [2020-10-23 17:58:19,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:19,317 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-10-23 17:58:19,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 17:58:19,317 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-10-23 17:58:19,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-23 17:58:19,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:19,321 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:19,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:58:19,528 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:19,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:19,529 INFO L82 PathProgramCache]: Analyzing trace with hash -701179643, now seen corresponding path program 4 times [2020-10-23 17:58:19,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:19,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734099696] [2020-10-23 17:58:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:19,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:20,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:20,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:20,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:20,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 193 proven. 313 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2020-10-23 17:58:20,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734099696] [2020-10-23 17:58:20,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484001690] [2020-10-23 17:58:20,104 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 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 17:58:20,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-23 17:58:20,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:58:20,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-23 17:58:20,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 207 proven. 356 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2020-10-23 17:58:20,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:20,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 17 [2020-10-23 17:58:20,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048779671] [2020-10-23 17:58:20,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-23 17:58:20,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:20,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-23 17:58:20,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-23 17:58:20,455 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 17 states. [2020-10-23 17:58:22,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:22,190 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2020-10-23 17:58:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 17:58:22,195 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 139 [2020-10-23 17:58:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:22,197 INFO L225 Difference]: With dead ends: 115 [2020-10-23 17:58:22,198 INFO L226 Difference]: Without dead ends: 71 [2020-10-23 17:58:22,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=304, Invalid=1028, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 17:58:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-23 17:58:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-10-23 17:58:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-23 17:58:22,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 82 transitions. [2020-10-23 17:58:22,222 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 82 transitions. Word has length 139 [2020-10-23 17:58:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:22,223 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 82 transitions. [2020-10-23 17:58:22,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-23 17:58:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 82 transitions. [2020-10-23 17:58:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-23 17:58:22,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:22,227 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:22,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-23 17:58:22,439 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:22,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:22,440 INFO L82 PathProgramCache]: Analyzing trace with hash -518046923, now seen corresponding path program 5 times [2020-10-23 17:58:22,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:22,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919731947] [2020-10-23 17:58:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 17:58:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2020-10-23 17:58:22,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919731947] [2020-10-23 17:58:22,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957863898] [2020-10-23 17:58:22,950 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 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 17:58:23,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-23 17:58:23,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:58:23,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-23 17:58:23,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 328 proven. 115 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2020-10-23 17:58:23,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:23,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2020-10-23 17:58:23,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562671931] [2020-10-23 17:58:23,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 17:58:23,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:23,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 17:58:23,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-23 17:58:23,181 INFO L87 Difference]: Start difference. First operand 67 states and 82 transitions. Second operand 12 states. [2020-10-23 17:58:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:24,109 INFO L93 Difference]: Finished difference Result 184 states and 258 transitions. [2020-10-23 17:58:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 17:58:24,110 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 180 [2020-10-23 17:58:24,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:24,115 INFO L225 Difference]: With dead ends: 184 [2020-10-23 17:58:24,115 INFO L226 Difference]: Without dead ends: 179 [2020-10-23 17:58:24,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2020-10-23 17:58:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-23 17:58:24,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2020-10-23 17:58:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-23 17:58:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 236 transitions. [2020-10-23 17:58:24,197 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 236 transitions. Word has length 180 [2020-10-23 17:58:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:24,198 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 236 transitions. [2020-10-23 17:58:24,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 17:58:24,198 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 236 transitions. [2020-10-23 17:58:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-23 17:58:24,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:24,212 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:24,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:58:24,429 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:24,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1246615247, now seen corresponding path program 6 times [2020-10-23 17:58:24,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:24,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919173066] [2020-10-23 17:58:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 17:58:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 17:58:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 17:58:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 921 proven. 1713 refuted. 0 times theorem prover too weak. 4486 trivial. 0 not checked. [2020-10-23 17:58:25,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919173066] [2020-10-23 17:58:25,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721075855] [2020-10-23 17:58:25,692 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 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 17:58:25,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2020-10-23 17:58:25,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:58:25,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 17:58:25,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 356 proven. 1124 refuted. 0 times theorem prover too weak. 5640 trivial. 0 not checked. [2020-10-23 17:58:26,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:26,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 10] total 20 [2020-10-23 17:58:26,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266490373] [2020-10-23 17:58:26,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 17:58:26,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:26,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 17:58:26,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-10-23 17:58:26,006 INFO L87 Difference]: Start difference. First operand 167 states and 236 transitions. Second operand 20 states. [2020-10-23 17:58:28,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:28,889 INFO L93 Difference]: Finished difference Result 278 states and 462 transitions. [2020-10-23 17:58:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-23 17:58:28,890 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 357 [2020-10-23 17:58:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:28,894 INFO L225 Difference]: With dead ends: 278 [2020-10-23 17:58:28,895 INFO L226 Difference]: Without dead ends: 119 [2020-10-23 17:58:28,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=533, Invalid=2017, Unknown=0, NotChecked=0, Total=2550 [2020-10-23 17:58:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-23 17:58:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 101. [2020-10-23 17:58:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-23 17:58:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2020-10-23 17:58:28,917 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 357 [2020-10-23 17:58:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:28,918 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2020-10-23 17:58:28,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 17:58:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2020-10-23 17:58:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-23 17:58:28,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:28,927 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:29,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:58:29,143 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:29,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:29,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1504626174, now seen corresponding path program 7 times [2020-10-23 17:58:29,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:29,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488771589] [2020-10-23 17:58:29,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 17:58:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 17:58:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 17:58:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 17:58:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2020-10-23 17:58:30,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488771589] [2020-10-23 17:58:30,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464675185] [2020-10-23 17:58:30,573 INFO L93 rtionOrderModulation]: Changing assertion order to 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 17:58:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:30,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-23 17:58:30,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2020-10-23 17:58:30,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:30,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2020-10-23 17:58:30,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548275254] [2020-10-23 17:58:30,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 17:58:30,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:30,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 17:58:30,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-23 17:58:30,968 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand 14 states. [2020-10-23 17:58:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:32,146 INFO L93 Difference]: Finished difference Result 367 states and 559 transitions. [2020-10-23 17:58:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 17:58:32,147 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 466 [2020-10-23 17:58:32,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:32,154 INFO L225 Difference]: With dead ends: 367 [2020-10-23 17:58:32,155 INFO L226 Difference]: Without dead ends: 362 [2020-10-23 17:58:32,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=262, Invalid=608, Unknown=0, NotChecked=0, Total=870 [2020-10-23 17:58:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-23 17:58:32,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 344. [2020-10-23 17:58:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2020-10-23 17:58:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 522 transitions. [2020-10-23 17:58:32,240 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 522 transitions. Word has length 466 [2020-10-23 17:58:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:32,246 INFO L481 AbstractCegarLoop]: Abstraction has 344 states and 522 transitions. [2020-10-23 17:58:32,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 17:58:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 522 transitions. [2020-10-23 17:58:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2020-10-23 17:58:32,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:58:32,274 INFO L422 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:58:32,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-23 17:58:32,489 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:58:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:58:32,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1581320541, now seen corresponding path program 8 times [2020-10-23 17:58:32,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:58:32,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912775802] [2020-10-23 17:58:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:58:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:33,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:58:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:58:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:33,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:33,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:33,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 17:58:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 17:58:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-23 17:58:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 17:58:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-23 17:58:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-23 17:58:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-23 17:58:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 17:58:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 17:58:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-23 17:58:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 17:58:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 17:58:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:58:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-10-23 17:58:37,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912775802] [2020-10-23 17:58:37,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886720068] [2020-10-23 17:58:37,006 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 17:58:37,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 17:58:37,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 17:58:37,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 220 conjunts are in the unsatisfiable core [2020-10-23 17:58:37,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 17:58:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-10-23 17:58:38,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 17:58:38,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 37 [2020-10-23 17:58:38,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886446521] [2020-10-23 17:58:38,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-23 17:58:38,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:58:38,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-23 17:58:38,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2020-10-23 17:58:38,402 INFO L87 Difference]: Start difference. First operand 344 states and 522 transitions. Second operand 37 states. [2020-10-23 17:58:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:58:41,260 INFO L93 Difference]: Finished difference Result 497 states and 829 transitions. [2020-10-23 17:58:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-23 17:58:41,262 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 752 [2020-10-23 17:58:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:58:41,264 INFO L225 Difference]: With dead ends: 497 [2020-10-23 17:58:41,264 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 17:58:41,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=882, Invalid=3948, Unknown=0, NotChecked=0, Total=4830 [2020-10-23 17:58:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 17:58:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 17:58:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 17:58:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 17:58:41,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 752 [2020-10-23 17:58:41,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:58:41,271 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 17:58:41,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-23 17:58:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 17:58:41,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 17:58:41,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 17:58:41,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 17:58:44,555 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 188 DAG size of output: 47 [2020-10-23 17:58:45,026 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 6 [2020-10-23 17:58:45,142 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 1 [2020-10-23 17:58:45,150 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 17:58:45,151 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 17:58:45,151 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 17:58:45,151 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 17:58:45,151 INFO L274 CegarLoopResult]: For program point fibonacciFINAL(lines 16 24) no Hoare annotation was computed. [2020-10-23 17:58:45,151 INFO L277 CegarLoopResult]: At program point fibonacciENTRY(lines 16 24) the Hoare annotation is: true [2020-10-23 17:58:45,152 INFO L270 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= fibonacci_~n |fibonacci_#in~n|) (< 1 fibonacci_~n)) [2020-10-23 17:58:45,152 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-23 17:58:45,152 INFO L270 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (let ((.cse2 (<= 4 |fibonacci_#in~n|))) (and (let ((.cse0 (= fibonacci_~n |fibonacci_#in~n|))) (or (and .cse0 (<= 21 |fibonacci_#t~ret7|)) (and (<= |fibonacci_#in~n| 8) .cse0))) (let ((.cse1 (<= 6 |fibonacci_#in~n|))) (or (and (<= 8 |fibonacci_#t~ret7|) (<= |fibonacci_#in~n| 7) .cse1) (and (<= |fibonacci_#in~n| 2) (<= 2 |fibonacci_#in~n|)) (and (<= 13 |fibonacci_#t~ret7|) .cse1) (and (<= 5 |fibonacci_#in~n|) (<= 3 |fibonacci_#t~ret7|) (<= |fibonacci_#in~n| 5)) (and .cse2 (<= |fibonacci_#in~n| 4)) (and (<= |fibonacci_#in~n| 3) (<= 3 |fibonacci_#in~n|)) (and (<= 5 |fibonacci_#t~ret7|) (<= |fibonacci_#in~n| 6) .cse1))) (or (not .cse2) (<= 2 |fibonacci_#t~ret7|)) (<= 1 |fibonacci_#t~ret7|))) [2020-10-23 17:58:45,152 INFO L274 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-10-23 17:58:45,152 INFO L274 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-10-23 17:58:45,152 INFO L274 CegarLoopResult]: For program point fibonacciEXIT(lines 16 24) no Hoare annotation was computed. [2020-10-23 17:58:45,153 INFO L274 CegarLoopResult]: For program point L17(lines 17 23) no Hoare annotation was computed. [2020-10-23 17:58:45,153 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:58:45,153 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 17:58:45,153 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:58:45,153 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 17:58:45,153 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 17:58:45,153 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 17:58:45,153 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 17:58:45,154 INFO L274 CegarLoopResult]: For program point L33(lines 33 37) no Hoare annotation was computed. [2020-10-23 17:58:45,154 INFO L277 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-10-23 17:58:45,154 INFO L274 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-10-23 17:58:45,154 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 27 38) the Hoare annotation is: true [2020-10-23 17:58:45,154 INFO L274 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-10-23 17:58:45,154 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 27 38) no Hoare annotation was computed. [2020-10-23 17:58:45,154 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 27 38) no Hoare annotation was computed. [2020-10-23 17:58:45,154 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: false [2020-10-23 17:58:45,154 INFO L274 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-10-23 17:58:45,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:58:45 BoogieIcfgContainer [2020-10-23 17:58:45,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:58:45,162 INFO L168 Benchmark]: Toolchain (without parser) took 33065.80 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 126.6 MB in the beginning and 440.6 MB in the end (delta: -314.0 MB). Peak memory consumption was 465.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:58:45,162 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:58:45,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.07 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:58:45,163 INFO L168 Benchmark]: Boogie Preprocessor took 36.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:58:45,164 INFO L168 Benchmark]: RCFGBuilder took 397.32 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 102.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:58:45,165 INFO L168 Benchmark]: TraceAbstraction took 32351.29 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 101.8 MB in the beginning and 440.6 MB in the end (delta: -338.8 MB). Peak memory consumption was 441.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:58:45,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.07 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 397.32 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 102.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 32351.29 ms. Allocated memory was 151.0 MB in the beginning and 784.3 MB in the end (delta: 633.3 MB). Free memory was 101.8 MB in the beginning and 440.6 MB in the end (delta: -338.8 MB). Peak memory consumption was 441.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.5s, OverallIterations: 11, TraceHistogramMax: 109, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 261 SDtfs, 766 SDslu, 531 SDs, 0 SdLazy, 2781 SolverSat, 806 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3128 GetRequests, 2844 SyntacticMatches, 2 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2085 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 57 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 443 PreInvPairs, 830 NumberOfFragments, 131 HoareAnnotationTreeSize, 443 FomulaSimplifications, 7758 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 10 FomulaSimplificationsInter, 15834 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 4167 NumberOfCodeBlocks, 3934 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 4147 ConstructedInterpolants, 0 QuantifiedInterpolants, 3671273 SizeOfPredicates, 44 NumberOfNonLiveVariables, 4608 ConjunctsInSsa, 308 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 92165/110902 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...