java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/ldv-regression/test22-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:38,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:38,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:38,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:38,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:38,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:38,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:38,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:38,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:38,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:38,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:38,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:38,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:38,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:38,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:38,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:38,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:38,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:38,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:38,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:38,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:38,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:38,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:38,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:38,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:08:38,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:08:38,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:08:38,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:08:38,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:08:38,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:08:38,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:08:38,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:08:38,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:08:38,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:38,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:38,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:38,991 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 [2019-10-14 23:08:39,005 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:39,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:39,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:39,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:39,007 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:39,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:39,008 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:39,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:39,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:39,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:39,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:39,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:39,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:39,009 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:39,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:39,010 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:39,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:39,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:39,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:39,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:39,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:39,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:39,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:39,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:39,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:39,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:39,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:39,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:39,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:39,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:39,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:39,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:39,325 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:39,325 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:39,326 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-1.c [2019-10-14 23:08:39,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96477cdf7/71135c30e1f54a4b95e8c4b73793b2b9/FLAGed2eecba3 [2019-10-14 23:08:39,887 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:39,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-1.c [2019-10-14 23:08:39,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96477cdf7/71135c30e1f54a4b95e8c4b73793b2b9/FLAGed2eecba3 [2019-10-14 23:08:40,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96477cdf7/71135c30e1f54a4b95e8c4b73793b2b9 [2019-10-14 23:08:40,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:40,240 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:40,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:40,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:40,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:40,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61791d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40, skipping insertion in model container [2019-10-14 23:08:40,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,256 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:40,276 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:40,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:40,465 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:40,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:40,498 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:40,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40 WrapperNode [2019-10-14 23:08:40,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:40,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:40,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:40,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:40,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (1/1) ... [2019-10-14 23:08:40,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:40,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:40,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:40,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:40,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (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 [2019-10-14 23:08:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-14 23:08:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2019-10-14 23:08:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-10-14 23:08:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:08:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:08:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:08:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:08:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2019-10-14 23:08:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:08:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:08:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:08:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:41,013 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:41,014 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:08:41,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:41 BoogieIcfgContainer [2019-10-14 23:08:41,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:41,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:41,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:41,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:41,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:40" (1/3) ... [2019-10-14 23:08:41,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57438bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:41, skipping insertion in model container [2019-10-14 23:08:41,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:40" (2/3) ... [2019-10-14 23:08:41,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57438bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:41, skipping insertion in model container [2019-10-14 23:08:41,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:41" (3/3) ... [2019-10-14 23:08:41,031 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-1.c [2019-10-14 23:08:41,040 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:41,047 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:08:41,059 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:08:41,084 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:41,084 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:41,084 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:41,084 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:41,084 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:41,084 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:41,085 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:41,085 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-10-14 23:08:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-14 23:08:41,108 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:41,109 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:41,111 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:41,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:41,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1345538594, now seen corresponding path program 1 times [2019-10-14 23:08:41,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:41,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269771662] [2019-10-14 23:08:41,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:41,126 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:41,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 23:08:41,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269771662] [2019-10-14 23:08:41,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:41,484 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:08:41,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679424707] [2019-10-14 23:08:41,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:08:41,489 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:41,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:08:41,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:08:41,503 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-10-14 23:08:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:41,741 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2019-10-14 23:08:41,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:08:41,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-10-14 23:08:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:41,754 INFO L225 Difference]: With dead ends: 49 [2019-10-14 23:08:41,754 INFO L226 Difference]: Without dead ends: 31 [2019-10-14 23:08:41,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:08:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-14 23:08:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-14 23:08:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-14 23:08:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-14 23:08:41,805 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2019-10-14 23:08:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:41,807 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-14 23:08:41,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:08:41,807 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-14 23:08:41,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:08:41,809 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:41,809 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:41,810 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:41,810 INFO L82 PathProgramCache]: Analyzing trace with hash -213153012, now seen corresponding path program 1 times [2019-10-14 23:08:41,811 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:41,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144255759] [2019-10-14 23:08:41,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:41,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:41,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:42,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144255759] [2019-10-14 23:08:42,226 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127285632] [2019-10-14 23:08:42,227 INFO L94 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 [2019-10-14 23:08:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:08:42,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:42,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:08:42,613 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2019-10-14 23:08:42,616 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:42,621 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2019-10-14 23:08:42,622 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:42,642 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:42,643 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:42,644 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:5 [2019-10-14 23:08:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 23:08:42,654 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:08:42,654 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 15 [2019-10-14 23:08:42,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307540229] [2019-10-14 23:08:42,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:08:42,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:42,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:08:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:08:42,660 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2019-10-14 23:08:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:42,819 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-10-14 23:08:42,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:08:42,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-14 23:08:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:42,822 INFO L225 Difference]: With dead ends: 42 [2019-10-14 23:08:42,822 INFO L226 Difference]: Without dead ends: 34 [2019-10-14 23:08:42,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:08:42,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-14 23:08:42,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-10-14 23:08:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-14 23:08:42,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-14 23:08:42,833 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2019-10-14 23:08:42,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:42,834 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-14 23:08:42,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:08:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-14 23:08:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-14 23:08:42,837 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:42,837 INFO L380 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:43,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:43,044 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:43,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:43,045 INFO L82 PathProgramCache]: Analyzing trace with hash -655504409, now seen corresponding path program 1 times [2019-10-14 23:08:43,045 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:43,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97281076] [2019-10-14 23:08:43,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:43,047 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:43,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:43,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97281076] [2019-10-14 23:08:43,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982232831] [2019-10-14 23:08:43,389 INFO L94 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 [2019-10-14 23:08:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-14 23:08:43,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:43,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:08:43,676 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2019-10-14 23:08:43,677 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:43,682 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2019-10-14 23:08:43,684 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:43,696 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:43,697 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:43,697 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:5 [2019-10-14 23:08:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 23:08:43,703 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:43,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 18 [2019-10-14 23:08:43,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263017819] [2019-10-14 23:08:43,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-14 23:08:43,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:43,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-14 23:08:43,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:08:43,707 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 18 states. [2019-10-14 23:08:44,621 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-10-14 23:08:45,089 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-10-14 23:08:45,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:45,581 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2019-10-14 23:08:45,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-14 23:08:45,582 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2019-10-14 23:08:45,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:45,585 INFO L225 Difference]: With dead ends: 71 [2019-10-14 23:08:45,585 INFO L226 Difference]: Without dead ends: 63 [2019-10-14 23:08:45,586 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=224, Invalid=1182, Unknown=0, NotChecked=0, Total=1406 [2019-10-14 23:08:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-14 23:08:45,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 35. [2019-10-14 23:08:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-14 23:08:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-10-14 23:08:45,598 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 40 [2019-10-14 23:08:45,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:45,599 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-10-14 23:08:45,599 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-14 23:08:45,599 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-10-14 23:08:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 23:08:45,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:45,600 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:45,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:45,805 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:45,806 INFO L82 PathProgramCache]: Analyzing trace with hash -553434622, now seen corresponding path program 2 times [2019-10-14 23:08:45,806 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:45,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176235551] [2019-10-14 23:08:45,807 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:45,807 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:45,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:46,151 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176235551] [2019-10-14 23:08:46,151 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659005516] [2019-10-14 23:08:46,152 INFO L92 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 [2019-10-14 23:08:46,222 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:08:46,222 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:08:46,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-14 23:08:46,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:46,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:08:46,473 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2019-10-14 23:08:46,474 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:46,482 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2019-10-14 23:08:46,483 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:46,494 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:46,495 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:46,496 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:5 [2019-10-14 23:08:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:46,501 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:46,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 24 [2019-10-14 23:08:46,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151577115] [2019-10-14 23:08:46,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-14 23:08:46,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:46,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-14 23:08:46,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:08:46,504 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 24 states. [2019-10-14 23:08:47,955 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-10-14 23:08:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:48,766 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2019-10-14 23:08:48,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-10-14 23:08:48,767 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 42 [2019-10-14 23:08:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:48,770 INFO L225 Difference]: With dead ends: 75 [2019-10-14 23:08:48,770 INFO L226 Difference]: Without dead ends: 67 [2019-10-14 23:08:48,771 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=344, Invalid=1912, Unknown=0, NotChecked=0, Total=2256 [2019-10-14 23:08:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-14 23:08:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2019-10-14 23:08:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-14 23:08:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-10-14 23:08:48,783 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 42 [2019-10-14 23:08:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:48,783 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-10-14 23:08:48,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-14 23:08:48,784 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-10-14 23:08:48,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:08:48,785 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:48,785 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:48,989 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:48,990 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:48,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:48,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1248617123, now seen corresponding path program 3 times [2019-10-14 23:08:48,991 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:48,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676058312] [2019-10-14 23:08:48,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:48,992 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:48,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:49,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676058312] [2019-10-14 23:08:49,331 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43284733] [2019-10-14 23:08:49,332 INFO L92 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 [2019-10-14 23:08:49,412 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-14 23:08:49,412 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:08:49,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 61 conjunts are in the unsatisfiable core [2019-10-14 23:08:49,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:49,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:08:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:08:49,918 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:49,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2019-10-14 23:08:49,918 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773339538] [2019-10-14 23:08:49,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-14 23:08:49,921 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:49,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-14 23:08:49,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2019-10-14 23:08:49,922 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 30 states. [2019-10-14 23:08:52,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:52,615 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2019-10-14 23:08:52,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-14 23:08:52,615 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 44 [2019-10-14 23:08:52,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:52,618 INFO L225 Difference]: With dead ends: 86 [2019-10-14 23:08:52,618 INFO L226 Difference]: Without dead ends: 60 [2019-10-14 23:08:52,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=397, Invalid=2359, Unknown=0, NotChecked=0, Total=2756 [2019-10-14 23:08:52,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-14 23:08:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2019-10-14 23:08:52,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:08:52,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-10-14 23:08:52,632 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 44 [2019-10-14 23:08:52,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:52,633 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-10-14 23:08:52,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-14 23:08:52,633 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-10-14 23:08:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:08:52,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:52,635 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:52,841 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:52,841 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:52,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1758090213, now seen corresponding path program 1 times [2019-10-14 23:08:52,842 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:52,843 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226191027] [2019-10-14 23:08:52,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:52,843 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:52,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:08:53,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226191027] [2019-10-14 23:08:53,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365143256] [2019-10-14 23:08:53,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:53,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-14 23:08:53,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:53,122 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2019-10-14 23:08:53,123 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-14 23:08:53,133 INFO L567 ElimStorePlain]: treesize reduction 14, result has 22.2 percent of original size [2019-10-14 23:08:53,133 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:53,134 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2019-10-14 23:08:53,198 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:08:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 23:08:53,205 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:53,205 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 18 [2019-10-14 23:08:53,205 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075265894] [2019-10-14 23:08:53,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-14 23:08:53,206 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:53,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-14 23:08:53,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:08:53,206 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 18 states. [2019-10-14 23:08:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:54,077 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2019-10-14 23:08:54,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:08:54,077 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2019-10-14 23:08:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:54,079 INFO L225 Difference]: With dead ends: 65 [2019-10-14 23:08:54,079 INFO L226 Difference]: Without dead ends: 40 [2019-10-14 23:08:54,080 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2019-10-14 23:08:54,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-14 23:08:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-14 23:08:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-14 23:08:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-10-14 23:08:54,088 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 44 [2019-10-14 23:08:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:54,089 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-10-14 23:08:54,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-14 23:08:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-10-14 23:08:54,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:08:54,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:54,090 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:54,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:54,294 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash 802366875, now seen corresponding path program 2 times [2019-10-14 23:08:54,296 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:54,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231838178] [2019-10-14 23:08:54,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:54,297 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:54,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:08:54,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231838178] [2019-10-14 23:08:54,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598456223] [2019-10-14 23:08:54,447 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:54,512 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:08:54,513 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:08:54,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 50 conjunts are in the unsatisfiable core [2019-10-14 23:08:54,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:55,077 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-10-14 23:08:55,079 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:55,084 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:55,084 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:55,085 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:13 [2019-10-14 23:08:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:55,126 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:55,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2019-10-14 23:08:55,126 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542526801] [2019-10-14 23:08:55,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-14 23:08:55,127 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:55,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-14 23:08:55,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2019-10-14 23:08:55,128 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 31 states. [2019-10-14 23:08:56,942 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-10-14 23:08:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:57,606 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2019-10-14 23:08:57,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-10-14 23:08:57,607 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 44 [2019-10-14 23:08:57,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:57,608 INFO L225 Difference]: With dead ends: 63 [2019-10-14 23:08:57,608 INFO L226 Difference]: Without dead ends: 42 [2019-10-14 23:08:57,610 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=456, Invalid=2736, Unknown=0, NotChecked=0, Total=3192 [2019-10-14 23:08:57,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-14 23:08:57,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-10-14 23:08:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:08:57,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2019-10-14 23:08:57,620 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 44 [2019-10-14 23:08:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:57,621 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2019-10-14 23:08:57,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-14 23:08:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2019-10-14 23:08:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:08:57,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:57,622 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:57,824 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:57,825 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:57,826 INFO L82 PathProgramCache]: Analyzing trace with hash 324163060, now seen corresponding path program 3 times [2019-10-14 23:08:57,826 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:57,826 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645686856] [2019-10-14 23:08:57,827 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:57,827 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:57,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:58,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645686856] [2019-10-14 23:08:58,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793204546] [2019-10-14 23:08:58,165 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:58,239 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-14 23:08:58,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:08:58,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 61 conjunts are in the unsatisfiable core [2019-10-14 23:08:58,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:58,570 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:08:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 23:08:58,615 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:58,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2019-10-14 23:08:58,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344200306] [2019-10-14 23:08:58,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-14 23:08:58,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:58,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-14 23:08:58,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2019-10-14 23:08:58,618 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 31 states. [2019-10-14 23:08:59,915 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-10-14 23:09:01,170 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-10-14 23:09:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:09:01,207 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2019-10-14 23:09:01,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-10-14 23:09:01,208 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 46 [2019-10-14 23:09:01,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:09:01,209 INFO L225 Difference]: With dead ends: 50 [2019-10-14 23:09:01,209 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:09:01,211 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=459, Invalid=2621, Unknown=0, NotChecked=0, Total=3080 [2019-10-14 23:09:01,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:09:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:09:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:09:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:09:01,212 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2019-10-14 23:09:01,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:09:01,213 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:09:01,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-14 23:09:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:09:01,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:09:01,414 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:09:01,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:09:01,623 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2019-10-14 23:09:01,885 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2019-10-14 23:09:02,150 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 37 [2019-10-14 23:09:02,321 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2019-10-14 23:09:02,389 INFO L443 ceAbstractionStarter]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2019-10-14 23:09:02,389 INFO L439 ceAbstractionStarter]: At program point initENTRY(lines 11 18) the Hoare annotation is: (or (= |~#d1~0.base| |~#d2~0.base|) (not (= |~#d2~0.offset| 0)) (not (= 0 |~#d1~0.offset|)) (= |#memory_int| |old(#memory_int)|)) [2019-10-14 23:09:02,389 INFO L443 ceAbstractionStarter]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2019-10-14 23:09:02,390 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:09:02,390 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#d2~0.offset| |old(~#d2~0.offset)|) (= |~#d1~0.base| |old(~#d1~0.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#d2~0.base| |old(~#d2~0.base)|) (= |~#d1~0.offset| |old(~#d1~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|)) [2019-10-14 23:09:02,390 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:09:02,390 INFO L443 ceAbstractionStarter]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2019-10-14 23:09:02,390 INFO L446 ceAbstractionStarter]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2019-10-14 23:09:02,390 INFO L443 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-10-14 23:09:02,390 INFO L443 ceAbstractionStarter]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2019-10-14 23:09:02,391 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:09:02,391 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 |~#d2~0.offset|) (not (= |~#d1~0.base| |~#d2~0.base|)) (= 0 |~#d1~0.offset|)) [2019-10-14 23:09:02,391 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:09:02,391 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:09:02,391 INFO L443 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2019-10-14 23:09:02,391 INFO L443 ceAbstractionStarter]: For program point L35-2(lines 35 44) no Hoare annotation was computed. [2019-10-14 23:09:02,391 INFO L439 ceAbstractionStarter]: At program point L33-1(line 33) the Hoare annotation is: (or (= |~#d1~0.base| |~#d2~0.base|) (not (= |~#d2~0.offset| 0)) (not (= 0 |~#d1~0.offset|)) (and (= main_~pd1~0.offset 0) (= |~#d2~0.base| main_~pd1~0.base)) (and (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|))) [2019-10-14 23:09:02,392 INFO L443 ceAbstractionStarter]: For program point L33-2(line 33) no Hoare annotation was computed. [2019-10-14 23:09:02,392 INFO L443 ceAbstractionStarter]: For program point L35-4(lines 35 44) no Hoare annotation was computed. [2019-10-14 23:09:02,392 INFO L439 ceAbstractionStarter]: At program point L33-3(line 33) the Hoare annotation is: (let ((.cse2 (= |~#d1~0.base| main_~pd1~0.base)) (.cse0 (= main_~pd2~0.offset 0)) (.cse1 (= main_~pd1~0.offset 0)) (.cse3 (not (= main_~pd2~0.base main_~pd1~0.base)))) (or (and .cse0 .cse1 (= |~#d2~0.base| main_~pd1~0.base)) (= |~#d1~0.base| |~#d2~0.base|) (and .cse0 .cse2 (= main_~pd1~0.offset |~#d1~0.offset|)) (not (= |~#d2~0.offset| 0)) (and .cse3 .cse2) (not (= 0 |~#d1~0.offset|)) (and .cse0 .cse1 .cse3))) [2019-10-14 23:09:02,392 INFO L443 ceAbstractionStarter]: For program point L33-4(line 33) no Hoare annotation was computed. [2019-10-14 23:09:02,392 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 30 50) no Hoare annotation was computed. [2019-10-14 23:09:02,392 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-10-14 23:09:02,393 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 30 50) no Hoare annotation was computed. [2019-10-14 23:09:02,393 INFO L439 ceAbstractionStarter]: At program point L42(lines 31 50) the Hoare annotation is: (or (= |~#d1~0.base| |~#d2~0.base|) (not (= |~#d2~0.offset| 0)) (not (= 0 |~#d1~0.offset|))) [2019-10-14 23:09:02,393 INFO L443 ceAbstractionStarter]: For program point L38-1(lines 38 40) no Hoare annotation was computed. [2019-10-14 23:09:02,393 INFO L439 ceAbstractionStarter]: At program point L38-3(lines 38 40) the Hoare annotation is: (let ((.cse2 (= main_~pd1~0.offset 0))) (let ((.cse0 (= main_~pd2~0.base main_~pa~0.base)) (.cse1 (= main_~pd2~0.offset 0)) (.cse3 (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (.cse4 (= main_~pd2~0.base main_~pd1~0.base)) (.cse5 (or (not (= 0 main_~pd1~0.base)) (not .cse2)))) (or (not (= |~#d2~0.offset| 0)) (and (= main_~pd2~0.offset main_~pa~0.offset) .cse0 .cse1 .cse2 (= |~#d2~0.base| main_~pd1~0.base) .cse3 .cse4 .cse5) (and (= 0 main_~pa~0.offset) .cse0 .cse1 .cse3 .cse4 .cse5 (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|) (not (= 0 |~#d1~0.offset|))))) [2019-10-14 23:09:02,394 INFO L439 ceAbstractionStarter]: At program point L38-4(lines 38 40) the Hoare annotation is: (let ((.cse6 (= main_~pd1~0.offset 0))) (let ((.cse0 (select |#memory_int| main_~pd2~0.base)) (.cse1 (= main_~pd2~0.base main_~pa~0.base)) (.cse2 (= main_~pd2~0.offset 0)) (.cse3 (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (.cse4 (= main_~pd2~0.base main_~pd1~0.base)) (.cse5 (or (not (= 0 main_~pd1~0.base)) (not .cse6)))) (or (= |~#d1~0.base| |~#d2~0.base|) (not (= |~#d2~0.offset| 0)) (and (<= (select .cse0 0) main_~i~0) (= 0 main_~pa~0.offset) .cse1 .cse2 .cse3 .cse4 .cse5 (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (not (= 0 |~#d1~0.offset|)) (and (= main_~pd2~0.offset main_~pa~0.offset) (<= (select .cse0 main_~pd2~0.offset) main_~i~0) .cse1 .cse2 .cse6 (= |~#d2~0.base| main_~pd1~0.base) .cse3 .cse4 .cse5)))) [2019-10-14 23:09:02,394 INFO L446 ceAbstractionStarter]: At program point L32(line 32) the Hoare annotation is: true [2019-10-14 23:09:02,394 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 30 50) the Hoare annotation is: (or (= |~#d1~0.base| |~#d2~0.base|) (not (= |~#d2~0.offset| 0)) (not (= 0 |~#d1~0.offset|)) (= |#memory_int| |old(#memory_int)|)) [2019-10-14 23:09:02,394 INFO L443 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2019-10-14 23:09:02,394 INFO L443 ceAbstractionStarter]: For program point L41-1(lines 41 43) no Hoare annotation was computed. [2019-10-14 23:09:02,394 INFO L443 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2019-10-14 23:09:02,394 INFO L446 ceAbstractionStarter]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2019-10-14 23:09:02,395 INFO L443 ceAbstractionStarter]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2019-10-14 23:09:02,395 INFO L443 ceAbstractionStarter]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2019-10-14 23:09:02,403 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:09:02,404 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:09:02,410 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:09:02,410 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:09:02,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:09:02 BoogieIcfgContainer [2019-10-14 23:09:02,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:09:02,415 INFO L168 Benchmark]: Toolchain (without parser) took 22175.62 ms. Allocated memory was 145.2 MB in the beginning and 378.5 MB in the end (delta: 233.3 MB). Free memory was 102.4 MB in the beginning and 142.0 MB in the end (delta: -39.6 MB). Peak memory consumption was 193.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:09:02,416 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-14 23:09:02,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.05 ms. Allocated memory is still 145.2 MB. Free memory was 102.2 MB in the beginning and 91.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:09:02,418 INFO L168 Benchmark]: Boogie Preprocessor took 127.72 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 180.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:09:02,418 INFO L168 Benchmark]: RCFGBuilder took 388.23 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 162.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:09:02,419 INFO L168 Benchmark]: TraceAbstraction took 21397.27 ms. Allocated memory was 202.4 MB in the beginning and 378.5 MB in the end (delta: 176.2 MB). Free memory was 161.4 MB in the beginning and 142.0 MB in the end (delta: 19.4 MB). Peak memory consumption was 195.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:09:02,423 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 145.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.05 ms. Allocated memory is still 145.2 MB. Free memory was 102.2 MB in the beginning and 91.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.72 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 91.8 MB in the beginning and 180.0 MB in the end (delta: -88.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.23 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 162.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21397.27 ms. Allocated memory was 202.4 MB in the beginning and 378.5 MB in the end (delta: 176.2 MB). Free memory was 161.4 MB in the beginning and 142.0 MB in the end (delta: 19.4 MB). Peak memory consumption was 195.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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 - InvariantResult [Line: 38]: Loop Invariant [2019-10-14 23:09:02,431 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:09:02,431 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:09:02,432 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-14 23:09:02,432 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((!(d2 == 0) || (((((((pd2 == pa && pd2 == pa) && pd2 == 0) && pd1 == 0) && d2 == pd1) && i <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0)))) || (((((((0 == pa && pd2 == pa) && pd2 == 0) && i <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pd1) && (!(0 == pd1) || !(pd1 == 0))) && d1 == pd1) && pd1 == d1)) || d1 == d2) || !(0 == d1) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (d1 == d2 || !(d2 == 0)) || !(0 == d1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Result: SAFE, OverallTime: 21.3s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, HoareTripleCheckerStatistics: 175 SDtfs, 569 SDslu, 590 SDs, 0 SdLazy, 3871 SolverSat, 515 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 622 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 77 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 28 PreInvPairs, 45 NumberOfFragments, 337 HoareAnnotationTreeSize, 28 FomulaSimplifications, 8785 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 13 FomulaSimplificationsInter, 2083 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 633 NumberOfCodeBlocks, 627 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 618 ConstructedInterpolants, 0 QuantifiedInterpolants, 123792 SizeOfPredicates, 67 NumberOfNonLiveVariables, 1343 ConjunctsInSsa, 234 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 148/308 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...