/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 06:38:51,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:38:51,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:38:51,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:38:51,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:38:51,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:38:51,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:38:51,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:38:51,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:38:51,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:38:51,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:38:51,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:38:51,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:38:51,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:38:51,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:38:51,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:38:51,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:38:51,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:38:51,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:38:51,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:38:51,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:38:51,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:38:51,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:38:51,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:38:51,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 06:38:51,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:38:51,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:38:51,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:38:51,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 06:38:51,812 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:38:51,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:38:51,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:38:51,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:38:51,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:38:51,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:38:51,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:38:51,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:38:51,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:38:51,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:38:51,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:38:51,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:38:51,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:38:51,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:38:51,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:38:51,817 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:38:51,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:38:51,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:38:51,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:38:51,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:38:51,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:38:51,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:38:51,819 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-18 06:38:52,167 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:38:52,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:38:52,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:38:52,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:38:52,200 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:38:52,201 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-18 06:38:52,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43916e91/3e22fa43b8cc4bcba52a01ac2d1c9f1d/FLAG9d61bb44c [2020-07-18 06:38:52,876 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:38:52,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-07-18 06:38:52,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43916e91/3e22fa43b8cc4bcba52a01ac2d1c9f1d/FLAG9d61bb44c [2020-07-18 06:38:53,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e43916e91/3e22fa43b8cc4bcba52a01ac2d1c9f1d [2020-07-18 06:38:53,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:38:53,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:38:53,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:38:53,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:38:53,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:38:53,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c3269e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53, skipping insertion in model container [2020-07-18 06:38:53,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:38:53,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:38:53,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:38:53,532 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:38:53,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:38:53,573 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:38:53,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53 WrapperNode [2020-07-18 06:38:53,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:38:53,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:38:53,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:38:53,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:38:53,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (1/1) ... [2020-07-18 06:38:53,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:38:53,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:38:53,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:38:53,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:38:53,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:38:53,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:38:53,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:38:53,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 06:38:53,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:38:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:38:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 06:38:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 06:38:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:38:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 06:38:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:38:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:38:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:38:54,158 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:38:54,159 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-18 06:38:54,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:38:54 BoogieIcfgContainer [2020-07-18 06:38:54,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:38:54,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:38:54,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:38:54,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:38:54,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:38:53" (1/3) ... [2020-07-18 06:38:54,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21021a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:38:54, skipping insertion in model container [2020-07-18 06:38:54,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:38:53" (2/3) ... [2020-07-18 06:38:54,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21021a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:38:54, skipping insertion in model container [2020-07-18 06:38:54,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:38:54" (3/3) ... [2020-07-18 06:38:54,179 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-07-18 06:38:54,195 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:38:54,207 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:38:54,229 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:38:54,279 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:38:54,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:38:54,280 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:38:54,280 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:38:54,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:38:54,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:38:54,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:38:54,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:38:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-07-18 06:38:54,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-18 06:38:54,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:54,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:54,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:54,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:54,333 INFO L82 PathProgramCache]: Analyzing trace with hash 405390035, now seen corresponding path program 1 times [2020-07-18 06:38:54,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:54,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620590832] [2020-07-18 06:38:54,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:55,029 INFO L280 TraceCheckUtils]: 0: Hoare triple {56#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} ~__return_main~0 := 0; {44#true} is VALID [2020-07-18 06:38:55,030 INFO L280 TraceCheckUtils]: 1: Hoare triple {44#true} ~__return_72~0 := 0; {44#true} is VALID [2020-07-18 06:38:55,030 INFO L280 TraceCheckUtils]: 2: Hoare triple {44#true} assume true; {44#true} is VALID [2020-07-18 06:38:55,031 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {44#true} {44#true} #65#return; {44#true} is VALID [2020-07-18 06:38:55,036 INFO L263 TraceCheckUtils]: 0: Hoare triple {44#true} call ULTIMATE.init(); {56#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} is VALID [2020-07-18 06:38:55,036 INFO L280 TraceCheckUtils]: 1: Hoare triple {56#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} ~__return_main~0 := 0; {44#true} is VALID [2020-07-18 06:38:55,037 INFO L280 TraceCheckUtils]: 2: Hoare triple {44#true} ~__return_72~0 := 0; {44#true} is VALID [2020-07-18 06:38:55,037 INFO L280 TraceCheckUtils]: 3: Hoare triple {44#true} assume true; {44#true} is VALID [2020-07-18 06:38:55,037 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {44#true} {44#true} #65#return; {44#true} is VALID [2020-07-18 06:38:55,038 INFO L263 TraceCheckUtils]: 5: Hoare triple {44#true} call #t~ret2 := main(); {44#true} is VALID [2020-07-18 06:38:55,038 INFO L280 TraceCheckUtils]: 6: Hoare triple {44#true} havoc ~main__i~0; {44#true} is VALID [2020-07-18 06:38:55,039 INFO L280 TraceCheckUtils]: 7: Hoare triple {44#true} havoc ~main__j~0; {44#true} is VALID [2020-07-18 06:38:55,039 INFO L280 TraceCheckUtils]: 8: Hoare triple {44#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {44#true} is VALID [2020-07-18 06:38:55,039 INFO L280 TraceCheckUtils]: 9: Hoare triple {44#true} ~main__i~0 := #t~nondet0; {44#true} is VALID [2020-07-18 06:38:55,040 INFO L280 TraceCheckUtils]: 10: Hoare triple {44#true} havoc #t~nondet0; {44#true} is VALID [2020-07-18 06:38:55,040 INFO L280 TraceCheckUtils]: 11: Hoare triple {44#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {44#true} is VALID [2020-07-18 06:38:55,041 INFO L280 TraceCheckUtils]: 12: Hoare triple {44#true} ~main__j~0 := #t~nondet1; {44#true} is VALID [2020-07-18 06:38:55,041 INFO L280 TraceCheckUtils]: 13: Hoare triple {44#true} havoc #t~nondet1; {44#true} is VALID [2020-07-18 06:38:55,042 INFO L280 TraceCheckUtils]: 14: Hoare triple {44#true} assume !!(~main__i~0 >= 0); {44#true} is VALID [2020-07-18 06:38:55,042 INFO L280 TraceCheckUtils]: 15: Hoare triple {44#true} assume !!(~main__j~0 >= 0); {44#true} is VALID [2020-07-18 06:38:55,047 INFO L280 TraceCheckUtils]: 16: Hoare triple {44#true} ~main__x~0 := ~main__i~0; {50#(and (<= main_~main__x~0 main_~main__i~0) (<= main_~main__i~0 main_~main__x~0))} is VALID [2020-07-18 06:38:55,049 INFO L280 TraceCheckUtils]: 17: Hoare triple {50#(and (<= main_~main__x~0 main_~main__i~0) (<= main_~main__i~0 main_~main__x~0))} ~main__y~0 := ~main__j~0; {51#(and (or (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0))))} is VALID [2020-07-18 06:38:55,051 INFO L280 TraceCheckUtils]: 18: Hoare triple {51#(and (or (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0))))} assume !(0 != ~main__x~0); {52#(and (or (<= main_~main__j~0 (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) main_~main__j~0)))} is VALID [2020-07-18 06:38:55,053 INFO L280 TraceCheckUtils]: 19: Hoare triple {52#(and (or (<= main_~main__j~0 (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) main_~main__j~0)))} assume ~main__i~0 == ~main__j~0; {53#(and (<= main_~main__y~0 0) (< 0 (+ main_~main__y~0 1)))} is VALID [2020-07-18 06:38:55,055 INFO L280 TraceCheckUtils]: 20: Hoare triple {53#(and (<= main_~main__y~0 0) (< 0 (+ main_~main__y~0 1)))} havoc ~__tmp_1~0; {53#(and (<= main_~main__y~0 0) (< 0 (+ main_~main__y~0 1)))} is VALID [2020-07-18 06:38:55,057 INFO L280 TraceCheckUtils]: 21: Hoare triple {53#(and (<= main_~main__y~0 0) (< 0 (+ main_~main__y~0 1)))} ~__tmp_1~0 := (if 0 == ~main__y~0 then 1 else 0); {54#(not (= 0 main_~__tmp_1~0))} is VALID [2020-07-18 06:38:55,058 INFO L280 TraceCheckUtils]: 22: Hoare triple {54#(not (= 0 main_~__tmp_1~0))} havoc ~__VERIFIER_assert__cond~0; {54#(not (= 0 main_~__tmp_1~0))} is VALID [2020-07-18 06:38:55,060 INFO L280 TraceCheckUtils]: 23: Hoare triple {54#(not (= 0 main_~__tmp_1~0))} ~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {55#(not (= 0 main_~__VERIFIER_assert__cond~0))} is VALID [2020-07-18 06:38:55,062 INFO L280 TraceCheckUtils]: 24: Hoare triple {55#(not (= 0 main_~__VERIFIER_assert__cond~0))} assume 0 == ~__VERIFIER_assert__cond~0; {45#false} is VALID [2020-07-18 06:38:55,062 INFO L280 TraceCheckUtils]: 25: Hoare triple {45#false} assume !false; {45#false} is VALID [2020-07-18 06:38:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:38:55,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620590832] [2020-07-18 06:38:55,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:38:55,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-18 06:38:55,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971667861] [2020-07-18 06:38:55,081 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-18 06:38:55,085 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:55,091 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-18 06:38:55,150 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:55,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-18 06:38:55,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:55,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-18 06:38:55,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-18 06:38:55,167 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 9 states. [2020-07-18 06:38:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:56,766 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-07-18 06:38:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-18 06:38:56,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-07-18 06:38:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-18 06:38:56,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 71 transitions. [2020-07-18 06:38:56,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-18 06:38:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 71 transitions. [2020-07-18 06:38:56,792 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 71 transitions. [2020-07-18 06:38:56,943 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:56,970 INFO L225 Difference]: With dead ends: 65 [2020-07-18 06:38:56,971 INFO L226 Difference]: Without dead ends: 34 [2020-07-18 06:38:56,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-07-18 06:38:57,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-18 06:38:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-18 06:38:57,142 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:57,143 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand 32 states. [2020-07-18 06:38:57,145 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand 32 states. [2020-07-18 06:38:57,145 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 32 states. [2020-07-18 06:38:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:57,161 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-18 06:38:57,162 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-07-18 06:38:57,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:57,166 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:57,166 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 34 states. [2020-07-18 06:38:57,166 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 34 states. [2020-07-18 06:38:57,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:57,172 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-18 06:38:57,172 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-07-18 06:38:57,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:57,173 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:57,173 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:57,174 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:57,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-18 06:38:57,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-18 06:38:57,185 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-07-18 06:38:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:57,187 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-18 06:38:57,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-18 06:38:57,188 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 32 states and 32 transitions. [2020-07-18 06:38:57,242 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:57,243 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-18 06:38:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-18 06:38:57,245 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:38:57,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:38:57,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:38:57,246 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:38:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:38:57,247 INFO L82 PathProgramCache]: Analyzing trace with hash -86090943, now seen corresponding path program 1 times [2020-07-18 06:38:57,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:38:57,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136393295] [2020-07-18 06:38:57,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:38:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:38:57,632 INFO L280 TraceCheckUtils]: 0: Hoare triple {351#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} ~__return_main~0 := 0; {337#true} is VALID [2020-07-18 06:38:57,632 INFO L280 TraceCheckUtils]: 1: Hoare triple {337#true} ~__return_72~0 := 0; {337#true} is VALID [2020-07-18 06:38:57,633 INFO L280 TraceCheckUtils]: 2: Hoare triple {337#true} assume true; {337#true} is VALID [2020-07-18 06:38:57,633 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {337#true} {337#true} #65#return; {337#true} is VALID [2020-07-18 06:38:57,637 INFO L263 TraceCheckUtils]: 0: Hoare triple {337#true} call ULTIMATE.init(); {351#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} is VALID [2020-07-18 06:38:57,637 INFO L280 TraceCheckUtils]: 1: Hoare triple {351#(and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|))} ~__return_main~0 := 0; {337#true} is VALID [2020-07-18 06:38:57,638 INFO L280 TraceCheckUtils]: 2: Hoare triple {337#true} ~__return_72~0 := 0; {337#true} is VALID [2020-07-18 06:38:57,638 INFO L280 TraceCheckUtils]: 3: Hoare triple {337#true} assume true; {337#true} is VALID [2020-07-18 06:38:57,638 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {337#true} {337#true} #65#return; {337#true} is VALID [2020-07-18 06:38:57,638 INFO L263 TraceCheckUtils]: 5: Hoare triple {337#true} call #t~ret2 := main(); {337#true} is VALID [2020-07-18 06:38:57,639 INFO L280 TraceCheckUtils]: 6: Hoare triple {337#true} havoc ~main__i~0; {337#true} is VALID [2020-07-18 06:38:57,639 INFO L280 TraceCheckUtils]: 7: Hoare triple {337#true} havoc ~main__j~0; {337#true} is VALID [2020-07-18 06:38:57,639 INFO L280 TraceCheckUtils]: 8: Hoare triple {337#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {337#true} is VALID [2020-07-18 06:38:57,640 INFO L280 TraceCheckUtils]: 9: Hoare triple {337#true} ~main__i~0 := #t~nondet0; {337#true} is VALID [2020-07-18 06:38:57,640 INFO L280 TraceCheckUtils]: 10: Hoare triple {337#true} havoc #t~nondet0; {337#true} is VALID [2020-07-18 06:38:57,640 INFO L280 TraceCheckUtils]: 11: Hoare triple {337#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {337#true} is VALID [2020-07-18 06:38:57,641 INFO L280 TraceCheckUtils]: 12: Hoare triple {337#true} ~main__j~0 := #t~nondet1; {337#true} is VALID [2020-07-18 06:38:57,641 INFO L280 TraceCheckUtils]: 13: Hoare triple {337#true} havoc #t~nondet1; {337#true} is VALID [2020-07-18 06:38:57,642 INFO L280 TraceCheckUtils]: 14: Hoare triple {337#true} assume !!(~main__i~0 >= 0); {337#true} is VALID [2020-07-18 06:38:57,643 INFO L280 TraceCheckUtils]: 15: Hoare triple {337#true} assume !!(~main__j~0 >= 0); {337#true} is VALID [2020-07-18 06:38:57,644 INFO L280 TraceCheckUtils]: 16: Hoare triple {337#true} ~main__x~0 := ~main__i~0; {343#(and (<= main_~main__x~0 main_~main__i~0) (<= main_~main__i~0 main_~main__x~0))} is VALID [2020-07-18 06:38:57,649 INFO L280 TraceCheckUtils]: 17: Hoare triple {343#(and (<= main_~main__x~0 main_~main__i~0) (<= main_~main__i~0 main_~main__x~0))} ~main__y~0 := ~main__j~0; {344#(and (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0)))} is VALID [2020-07-18 06:38:57,650 INFO L280 TraceCheckUtils]: 18: Hoare triple {344#(and (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0)))} assume 0 != ~main__x~0; {344#(and (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0)))} is VALID [2020-07-18 06:38:57,651 INFO L280 TraceCheckUtils]: 19: Hoare triple {344#(and (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0)))} ~main____CPAchecker_TMP_0~0 := ~main__x~0; {344#(and (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0)))} is VALID [2020-07-18 06:38:57,653 INFO L280 TraceCheckUtils]: 20: Hoare triple {344#(and (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0)))} ~main__x~0 := ~main__x~0 - 1; {345#(and (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0 1)) (<= (+ main_~main__j~0 main_~main__x~0 1) (+ main_~main__i~0 main_~main__y~0)))} is VALID [2020-07-18 06:38:57,654 INFO L280 TraceCheckUtils]: 21: Hoare triple {345#(and (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0 1)) (<= (+ main_~main__j~0 main_~main__x~0 1) (+ main_~main__i~0 main_~main__y~0)))} ~main____CPAchecker_TMP_1~0 := ~main__y~0; {345#(and (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0 1)) (<= (+ main_~main__j~0 main_~main__x~0 1) (+ main_~main__i~0 main_~main__y~0)))} is VALID [2020-07-18 06:38:57,655 INFO L280 TraceCheckUtils]: 22: Hoare triple {345#(and (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0 1)) (<= (+ main_~main__j~0 main_~main__x~0 1) (+ main_~main__i~0 main_~main__y~0)))} ~main__y~0 := ~main__y~0 - 1; {346#(and (or (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0))))} is VALID [2020-07-18 06:38:57,656 INFO L280 TraceCheckUtils]: 23: Hoare triple {346#(and (or (<= (+ main_~main__j~0 main_~main__x~0) (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) (+ main_~main__j~0 main_~main__x~0))))} assume !(0 != ~main__x~0); {347#(and (or (<= main_~main__j~0 (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) main_~main__j~0)))} is VALID [2020-07-18 06:38:57,658 INFO L280 TraceCheckUtils]: 24: Hoare triple {347#(and (or (<= main_~main__j~0 (+ main_~main__i~0 main_~main__y~0)) (< 0 (+ main_~main__y~0 1))) (or (<= main_~main__y~0 0) (<= (+ main_~main__i~0 main_~main__y~0) main_~main__j~0)))} assume ~main__i~0 == ~main__j~0; {348#(and (<= main_~main__y~0 0) (< 0 (+ main_~main__y~0 1)))} is VALID [2020-07-18 06:38:57,658 INFO L280 TraceCheckUtils]: 25: Hoare triple {348#(and (<= main_~main__y~0 0) (< 0 (+ main_~main__y~0 1)))} havoc ~__tmp_1~0; {348#(and (<= main_~main__y~0 0) (< 0 (+ main_~main__y~0 1)))} is VALID [2020-07-18 06:38:57,659 INFO L280 TraceCheckUtils]: 26: Hoare triple {348#(and (<= main_~main__y~0 0) (< 0 (+ main_~main__y~0 1)))} ~__tmp_1~0 := (if 0 == ~main__y~0 then 1 else 0); {349#(not (= 0 main_~__tmp_1~0))} is VALID [2020-07-18 06:38:57,660 INFO L280 TraceCheckUtils]: 27: Hoare triple {349#(not (= 0 main_~__tmp_1~0))} havoc ~__VERIFIER_assert__cond~0; {349#(not (= 0 main_~__tmp_1~0))} is VALID [2020-07-18 06:38:57,663 INFO L280 TraceCheckUtils]: 28: Hoare triple {349#(not (= 0 main_~__tmp_1~0))} ~__VERIFIER_assert__cond~0 := ~__tmp_1~0; {350#(not (= 0 main_~__VERIFIER_assert__cond~0))} is VALID [2020-07-18 06:38:57,664 INFO L280 TraceCheckUtils]: 29: Hoare triple {350#(not (= 0 main_~__VERIFIER_assert__cond~0))} assume 0 == ~__VERIFIER_assert__cond~0; {338#false} is VALID [2020-07-18 06:38:57,664 INFO L280 TraceCheckUtils]: 30: Hoare triple {338#false} assume !false; {338#false} is VALID [2020-07-18 06:38:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 06:38:57,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136393295] [2020-07-18 06:38:57,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-18 06:38:57,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-07-18 06:38:57,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78803288] [2020-07-18 06:38:57,673 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-07-18 06:38:57,675 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:38:57,675 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states. [2020-07-18 06:38:57,714 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:57,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-18 06:38:57,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:38:57,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-18 06:38:57,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-18 06:38:57,716 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 11 states. [2020-07-18 06:38:58,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:58,619 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-18 06:38:58,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-18 06:38:58,620 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-07-18 06:38:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:38:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-18 06:38:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 34 transitions. [2020-07-18 06:38:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-18 06:38:58,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 34 transitions. [2020-07-18 06:38:58,626 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states and 34 transitions. [2020-07-18 06:38:58,685 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:58,686 INFO L225 Difference]: With dead ends: 34 [2020-07-18 06:38:58,686 INFO L226 Difference]: Without dead ends: 0 [2020-07-18 06:38:58,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-07-18 06:38:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-18 06:38:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-18 06:38:58,689 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:38:58,689 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:58,689 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:58,689 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:58,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:58,690 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 06:38:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:38:58,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:58,690 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:58,691 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:58,691 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-18 06:38:58,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:38:58,691 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-18 06:38:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:38:58,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:58,692 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:38:58,692 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:38:58,692 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:38:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-18 06:38:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-18 06:38:58,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-18 06:38:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:38:58,693 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-18 06:38:58,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-18 06:38:58,694 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-18 06:38:58,694 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:38:58,694 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-18 06:38:58,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:38:58,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 06:38:58,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-18 06:38:59,325 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-07-18 06:38:59,596 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-18 06:38:59,597 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-07-18 06:38:59,597 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_72~0 |old(~__return_72~0)|)) [2020-07-18 06:38:59,597 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-18 06:38:59,597 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-18 06:38:59,597 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-18 06:38:59,598 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-18 06:38:59,598 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-18 06:38:59,598 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-18 06:38:59,598 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-18 06:38:59,598 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-07-18 06:38:59,598 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-07-18 06:38:59,599 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-18 06:38:59,599 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,599 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,600 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 11 68) the Hoare annotation is: (or (not (= 0 main_~__VERIFIER_assert__cond~0)) (= |old(~__return_72~0)| ~__return_72~0)) [2020-07-18 06:38:59,600 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (not (= 0 main_~__VERIFIER_assert__cond~0)) (= |old(~__return_72~0)| ~__return_72~0)) [2020-07-18 06:38:59,600 INFO L264 CegarLoopResult]: At program point L23(lines 23 66) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,600 INFO L264 CegarLoopResult]: At program point L52(line 52) the Hoare annotation is: false [2020-07-18 06:38:59,601 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,601 INFO L264 CegarLoopResult]: At program point L17(lines 17 67) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,601 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 0)) (.cse1 (< 0 (+ main_~main__y~0 1))) (.cse2 (= |old(~__return_72~0)| ~__return_72~0)) (.cse3 (not (= 0 main_~__tmp_1~0)))) (or (and (<= main_~main__x~0 main_~main__i~0) .cse0 .cse1 .cse2 .cse3 (<= main_~main__i~0 main_~main__x~0)) (let ((.cse5 (+ main_~main__i~0 main_~main__y~0)) (.cse4 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse4 .cse5) .cse0 .cse1 (<= .cse5 .cse4) .cse2 .cse3)))) [2020-07-18 06:38:59,601 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,601 INFO L264 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,601 INFO L264 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 0)) (.cse1 (< 0 (+ main_~main__y~0 1))) (.cse2 (= |old(~__return_72~0)| ~__return_72~0))) (or (and (<= main_~main__x~0 main_~main__i~0) .cse0 .cse1 .cse2 (<= main_~main__i~0 main_~main__x~0)) (let ((.cse4 (+ main_~main__i~0 main_~main__y~0)) (.cse3 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse3 .cse4) .cse0 .cse1 (<= .cse4 .cse3) .cse2)))) [2020-07-18 06:38:59,602 INFO L264 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,603 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 11 68) the Hoare annotation is: (or (not (= 0 main_~__VERIFIER_assert__cond~0)) (= |old(~__return_72~0)| ~__return_72~0)) [2020-07-18 06:38:59,604 INFO L264 CegarLoopResult]: At program point L42(lines 42 64) the Hoare annotation is: (let ((.cse3 (<= main_~main__y~0 0)) (.cse8 (+ main_~main__j~0 main_~main__x~0)) (.cse7 (+ main_~main__i~0 main_~main__y~0)) (.cse1 (< 0 (+ main_~main__y~0 1)))) (let ((.cse2 (or (<= main_~main__j~0 .cse7) .cse1)) (.cse0 (<= .cse8 .cse7)) (.cse5 (or .cse3 (<= .cse7 main_~main__j~0))) (.cse4 (<= .cse7 .cse8)) (.cse6 (= |old(~__return_72~0)| ~__return_72~0))) (or (and (or .cse0 .cse1) .cse2 (<= main_~main__x~0 main_~main__i~0) (or .cse3 .cse4) .cse5 .cse6 (<= main_~main__i~0 main_~main__x~0)) (and .cse2 .cse0 .cse5 .cse4 .cse6)))) [2020-07-18 06:38:59,607 INFO L264 CegarLoopResult]: At program point L38(lines 28 66) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-18 06:38:59,610 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (+ main_~main__j~0 main_~main__x~0 1)) (.cse0 (+ main_~main__i~0 main_~main__y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-18 06:38:59,610 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-18 06:38:59,611 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) the Hoare annotation is: false [2020-07-18 06:38:59,611 INFO L264 CegarLoopResult]: At program point L63(line 63) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,611 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= main_~main__x~0 main_~main__i~0) (= |old(~__return_72~0)| ~__return_72~0) (<= main_~main__i~0 main_~main__x~0)) [2020-07-18 06:38:59,611 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,612 INFO L264 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (not (= 0 main_~__VERIFIER_assert__cond~0)) [2020-07-18 06:38:59,612 INFO L264 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: false [2020-07-18 06:38:59,612 INFO L264 CegarLoopResult]: At program point L49(lines 49 58) the Hoare annotation is: (let ((.cse0 (not (= 0 main_~__VERIFIER_assert__cond~0))) (.cse3 (<= main_~main__y~0 0)) (.cse4 (< 0 (+ main_~main__y~0 1))) (.cse5 (= |old(~__return_72~0)| ~__return_72~0)) (.cse6 (not (= 0 main_~__tmp_1~0)))) (or (let ((.cse2 (+ main_~main__i~0 main_~main__y~0)) (.cse1 (+ main_~main__j~0 main_~main__x~0))) (and .cse0 (<= .cse1 .cse2) .cse3 .cse4 (<= .cse2 .cse1) .cse5 .cse6)) (and .cse0 (<= main_~main__x~0 main_~main__i~0) .cse3 .cse4 .cse5 .cse6 (<= main_~main__i~0 main_~main__x~0)))) [2020-07-18 06:38:59,615 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,615 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,615 INFO L264 CegarLoopResult]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 0)) (.cse1 (< 0 (+ main_~main__y~0 1))) (.cse2 (= |old(~__return_72~0)| ~__return_72~0)) (.cse3 (not (= 0 main_~__tmp_1~0)))) (or (and (<= main_~main__x~0 main_~main__i~0) .cse0 .cse1 .cse2 .cse3 (<= main_~main__i~0 main_~main__x~0)) (let ((.cse5 (+ main_~main__i~0 main_~main__y~0)) (.cse4 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse4 .cse5) .cse0 .cse1 (<= .cse5 .cse4) .cse2 .cse3)))) [2020-07-18 06:38:59,616 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,616 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2020-07-18 06:38:59,616 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (<= main_~main__y~0 0)) (.cse1 (< 0 (+ main_~main__y~0 1))) (.cse2 (= |old(~__return_72~0)| ~__return_72~0))) (or (and (<= main_~main__x~0 main_~main__i~0) .cse0 .cse1 .cse2 (<= main_~main__i~0 main_~main__x~0)) (let ((.cse4 (+ main_~main__i~0 main_~main__y~0)) (.cse3 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse3 .cse4) .cse0 .cse1 (<= .cse4 .cse3) .cse2)))) [2020-07-18 06:38:59,616 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (+ main_~main__j~0 main_~main__x~0 1)) (.cse0 (+ main_~main__i~0 main_~main__y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-18 06:38:59,616 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (= |old(~__return_72~0)| ~__return_72~0))) [2020-07-18 06:38:59,623 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-18 06:38:59,624 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 06:38:59,624 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 06:38:59,625 WARN L170 areAnnotationChecker]: L5-1 has no Hoare annotation [2020-07-18 06:38:59,625 WARN L170 areAnnotationChecker]: L5-3 has no Hoare annotation [2020-07-18 06:38:59,643 INFO L163 areAnnotationChecker]: CFG has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 06:38:59,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 06:38:59 BoogieIcfgContainer [2020-07-18 06:38:59,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 06:38:59,665 INFO L168 Benchmark]: Toolchain (without parser) took 6456.05 ms. Allocated memory was 134.2 MB in the beginning and 299.9 MB in the end (delta: 165.7 MB). Free memory was 98.7 MB in the beginning and 208.5 MB in the end (delta: -109.8 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:59,666 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 134.2 MB. Free memory is still 116.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-18 06:38:59,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.62 ms. Allocated memory is still 134.2 MB. Free memory was 98.3 MB in the beginning and 87.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:59,668 INFO L168 Benchmark]: Boogie Preprocessor took 35.87 ms. Allocated memory is still 134.2 MB. Free memory was 87.8 MB in the beginning and 86.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:59,669 INFO L168 Benchmark]: RCFGBuilder took 556.04 ms. Allocated memory was 134.2 MB in the beginning and 198.7 MB in the end (delta: 64.5 MB). Free memory was 86.2 MB in the beginning and 157.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:59,670 INFO L168 Benchmark]: TraceAbstraction took 5493.45 ms. Allocated memory was 198.7 MB in the beginning and 299.9 MB in the end (delta: 101.2 MB). Free memory was 156.3 MB in the beginning and 208.5 MB in the end (delta: -52.2 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2020-07-18 06:38:59,674 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 134.2 MB. Free memory is still 116.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.62 ms. Allocated memory is still 134.2 MB. Free memory was 98.3 MB in the beginning and 87.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.87 ms. Allocated memory is still 134.2 MB. Free memory was 87.8 MB in the beginning and 86.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 556.04 ms. Allocated memory was 134.2 MB in the beginning and 198.7 MB in the end (delta: 64.5 MB). Free memory was 86.2 MB in the beginning and 157.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5493.45 ms. Allocated memory was 198.7 MB in the beginning and 299.9 MB in the end (delta: 101.2 MB). Free memory was 156.3 MB in the beginning and 208.5 MB in the end (delta: -52.2 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: 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: 28]: Loop Invariant Derived loop invariant: (main__j + main__x <= main__i + main__y && main__i + main__y <= main__j + main__x) && \old(__return_72) == __return_72 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: !(0 == __VERIFIER_assert__cond) || \old(__return_72) == __return_72 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 151 SDslu, 106 SDs, 0 SdLazy, 329 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 41 PreInvPairs, 63 NumberOfFragments, 541 HoareAnnotationTreeSize, 41 FomulaSimplifications, 560 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 41 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 8200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...