/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/ldv-regression/test_while_int.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-11 01:07:47,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-11 01:07:47,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-11 01:07:47,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-11 01:07:47,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-11 01:07:47,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-11 01:07:47,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-11 01:07:47,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-11 01:07:47,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-11 01:07:47,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-11 01:07:47,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-11 01:07:47,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-11 01:07:47,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-11 01:07:47,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-11 01:07:47,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-11 01:07:47,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-11 01:07:47,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-11 01:07:47,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-11 01:07:47,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-11 01:07:47,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-11 01:07:47,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-11 01:07:47,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-11 01:07:47,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-11 01:07:47,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-11 01:07:47,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-11 01:07:47,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-11 01:07:47,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-11 01:07:47,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-11 01:07:47,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-11 01:07:47,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-11 01:07:47,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-11 01:07:47,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-11 01:07:47,637 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-11 01:07:47,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-11 01:07:47,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-11 01:07:47,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-11 01:07:47,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-11 01:07:47,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-11 01:07:47,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-11 01:07:47,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-11 01:07:47,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-11 01:07:47,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-11 01:07:47,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-11 01:07:47,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-11 01:07:47,642 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-11 01:07:47,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-11 01:07:47,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-11 01:07:47,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-11 01:07:47,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-11 01:07:47,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-11 01:07:47,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-11 01:07:47,644 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 [2020-07-11 01:07:47,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-11 01:07:47,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-11 01:07:47,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-11 01:07:47,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-11 01:07:47,944 INFO L275 PluginConnector]: CDTParser initialized [2020-07-11 01:07:47,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-07-11 01:07:48,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40ce483a/bdaa0f90809247b1ab69eed83a6a4eef/FLAGc484d6bb6 [2020-07-11 01:07:48,466 INFO L306 CDTParser]: Found 1 translation units. [2020-07-11 01:07:48,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.i [2020-07-11 01:07:48,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40ce483a/bdaa0f90809247b1ab69eed83a6a4eef/FLAGc484d6bb6 [2020-07-11 01:07:48,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b40ce483a/bdaa0f90809247b1ab69eed83a6a4eef [2020-07-11 01:07:48,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-11 01:07:48,837 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-11 01:07:48,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-11 01:07:48,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-11 01:07:48,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-11 01:07:48,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:07:48" (1/1) ... [2020-07-11 01:07:48,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba8ccf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:48, skipping insertion in model container [2020-07-11 01:07:48,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 01:07:48" (1/1) ... [2020-07-11 01:07:48,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-11 01:07:48,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-11 01:07:49,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:07:49,063 INFO L203 MainTranslator]: Completed pre-run [2020-07-11 01:07:49,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-11 01:07:49,104 INFO L208 MainTranslator]: Completed translation [2020-07-11 01:07:49,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49 WrapperNode [2020-07-11 01:07:49,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-11 01:07:49,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-11 01:07:49,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-11 01:07:49,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-11 01:07:49,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (1/1) ... [2020-07-11 01:07:49,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (1/1) ... [2020-07-11 01:07:49,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (1/1) ... [2020-07-11 01:07:49,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (1/1) ... [2020-07-11 01:07:49,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (1/1) ... [2020-07-11 01:07:49,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (1/1) ... [2020-07-11 01:07:49,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (1/1) ... [2020-07-11 01:07:49,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-11 01:07:49,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-11 01:07:49,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-11 01:07:49,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-11 01:07:49,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (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 [2020-07-11 01:07:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-11 01:07:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-11 01:07:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-11 01:07:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2020-07-11 01:07:49,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-11 01:07:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-11 01:07:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-11 01:07:49,279 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2020-07-11 01:07:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-11 01:07:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-11 01:07:49,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-11 01:07:49,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-11 01:07:49,529 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-11 01:07:49,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:07:49 BoogieIcfgContainer [2020-07-11 01:07:49,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-11 01:07:49,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-11 01:07:49,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-11 01:07:49,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-11 01:07:49,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 01:07:48" (1/3) ... [2020-07-11 01:07:49,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e89545c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:07:49, skipping insertion in model container [2020-07-11 01:07:49,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 01:07:49" (2/3) ... [2020-07-11 01:07:49,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e89545c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 01:07:49, skipping insertion in model container [2020-07-11 01:07:49,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 01:07:49" (3/3) ... [2020-07-11 01:07:49,541 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2020-07-11 01:07:49,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-11 01:07:49,559 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-11 01:07:49,571 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-11 01:07:49,592 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-11 01:07:49,593 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-11 01:07:49,593 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-11 01:07:49,593 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-11 01:07:49,593 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-11 01:07:49,593 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-11 01:07:49,593 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-11 01:07:49,593 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-11 01:07:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-11 01:07:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-11 01:07:49,616 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:07:49,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 01:07:49,617 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:07:49,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:07:49,624 INFO L82 PathProgramCache]: Analyzing trace with hash -459927168, now seen corresponding path program 1 times [2020-07-11 01:07:49,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:07:49,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111701349] [2020-07-11 01:07:49,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:07:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:07:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:07:49,901 INFO L280 TraceCheckUtils]: 0: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-11 01:07:49,901 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {27#true} {27#true} #38#return; {27#true} is VALID [2020-07-11 01:07:49,903 INFO L263 TraceCheckUtils]: 0: Hoare triple {27#true} call ULTIMATE.init(); {27#true} is VALID [2020-07-11 01:07:49,904 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-11 01:07:49,904 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} #38#return; {27#true} is VALID [2020-07-11 01:07:49,904 INFO L263 TraceCheckUtils]: 3: Hoare triple {27#true} call #t~ret1 := main(); {27#true} is VALID [2020-07-11 01:07:49,906 INFO L280 TraceCheckUtils]: 4: Hoare triple {27#true} ~i~0 := 0; {31#(<= main_~i~0 0)} is VALID [2020-07-11 01:07:49,907 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#(<= main_~i~0 0)} assume !!(~i~0 < 5); {31#(<= main_~i~0 0)} is VALID [2020-07-11 01:07:49,908 INFO L280 TraceCheckUtils]: 6: Hoare triple {31#(<= main_~i~0 0)} #t~post0 := ~i~0; {32#(<= |main_#t~post0| 0)} is VALID [2020-07-11 01:07:49,910 INFO L280 TraceCheckUtils]: 7: Hoare triple {32#(<= |main_#t~post0| 0)} ~i~0 := 1 + #t~post0; {33#(<= main_~i~0 1)} is VALID [2020-07-11 01:07:49,911 INFO L280 TraceCheckUtils]: 8: Hoare triple {33#(<= main_~i~0 1)} havoc #t~post0; {33#(<= main_~i~0 1)} is VALID [2020-07-11 01:07:49,913 INFO L263 TraceCheckUtils]: 9: Hoare triple {33#(<= main_~i~0 1)} call check_error((if 3 != ~i~0 then 1 else 0)); {34#(not (= 0 |check_error_#in~b|))} is VALID [2020-07-11 01:07:49,915 INFO L280 TraceCheckUtils]: 10: Hoare triple {34#(not (= 0 |check_error_#in~b|))} ~b := #in~b; {35#(not (= 0 check_error_~b))} is VALID [2020-07-11 01:07:49,916 INFO L280 TraceCheckUtils]: 11: Hoare triple {35#(not (= 0 check_error_~b))} assume !(0 != ~b); {28#false} is VALID [2020-07-11 01:07:49,916 INFO L263 TraceCheckUtils]: 12: Hoare triple {28#false} call __blast_assert(); {28#false} is VALID [2020-07-11 01:07:49,916 INFO L280 TraceCheckUtils]: 13: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-11 01:07:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 01:07:49,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111701349] [2020-07-11 01:07:49,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-11 01:07:49,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-11 01:07:49,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865523015] [2020-07-11 01:07:49,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-11 01:07:49,931 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 01:07:49,934 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-11 01:07:49,971 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:49,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-11 01:07:49,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 01:07:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-11 01:07:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-11 01:07:49,984 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 7 states. [2020-07-11 01:07:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:50,382 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2020-07-11 01:07:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-11 01:07:50,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-11 01:07:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 01:07:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-11 01:07:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 65 transitions. [2020-07-11 01:07:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-11 01:07:50,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 65 transitions. [2020-07-11 01:07:50,403 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states and 65 transitions. [2020-07-11 01:07:50,514 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 65 edges. 65 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:50,527 INFO L225 Difference]: With dead ends: 53 [2020-07-11 01:07:50,527 INFO L226 Difference]: Without dead ends: 29 [2020-07-11 01:07:50,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-07-11 01:07:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-11 01:07:50,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-07-11 01:07:50,606 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 01:07:50,606 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand 26 states. [2020-07-11 01:07:50,607 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand 26 states. [2020-07-11 01:07:50,607 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 26 states. [2020-07-11 01:07:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:50,611 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-11 01:07:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-07-11 01:07:50,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:07:50,613 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:07:50,613 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 29 states. [2020-07-11 01:07:50,613 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 29 states. [2020-07-11 01:07:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:50,617 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-11 01:07:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-07-11 01:07:50,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:07:50,618 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:07:50,618 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 01:07:50,618 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 01:07:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-11 01:07:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-11 01:07:50,623 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 14 [2020-07-11 01:07:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 01:07:50,624 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-11 01:07:50,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-11 01:07:50,624 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 26 states and 26 transitions. [2020-07-11 01:07:50,666 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-11 01:07:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-11 01:07:50,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:07:50,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 01:07:50,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-11 01:07:50,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:07:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:07:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash 299235803, now seen corresponding path program 1 times [2020-07-11 01:07:50,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:07:50,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991085724] [2020-07-11 01:07:50,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:07:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:07:50,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:07:50,821 INFO L280 TraceCheckUtils]: 0: Hoare triple {260#true} assume true; {260#true} is VALID [2020-07-11 01:07:50,822 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {260#true} {260#true} #38#return; {260#true} is VALID [2020-07-11 01:07:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-11 01:07:50,832 INFO L280 TraceCheckUtils]: 0: Hoare triple {260#true} ~b := #in~b; {260#true} is VALID [2020-07-11 01:07:50,832 INFO L280 TraceCheckUtils]: 1: Hoare triple {260#true} assume 0 != ~b; {260#true} is VALID [2020-07-11 01:07:50,832 INFO L280 TraceCheckUtils]: 2: Hoare triple {260#true} assume true; {260#true} is VALID [2020-07-11 01:07:50,833 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {260#true} {266#(<= main_~i~0 1)} #42#return; {266#(<= main_~i~0 1)} is VALID [2020-07-11 01:07:50,834 INFO L263 TraceCheckUtils]: 0: Hoare triple {260#true} call ULTIMATE.init(); {260#true} is VALID [2020-07-11 01:07:50,834 INFO L280 TraceCheckUtils]: 1: Hoare triple {260#true} assume true; {260#true} is VALID [2020-07-11 01:07:50,835 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {260#true} {260#true} #38#return; {260#true} is VALID [2020-07-11 01:07:50,835 INFO L263 TraceCheckUtils]: 3: Hoare triple {260#true} call #t~ret1 := main(); {260#true} is VALID [2020-07-11 01:07:50,836 INFO L280 TraceCheckUtils]: 4: Hoare triple {260#true} ~i~0 := 0; {264#(<= main_~i~0 0)} is VALID [2020-07-11 01:07:50,836 INFO L280 TraceCheckUtils]: 5: Hoare triple {264#(<= main_~i~0 0)} assume !!(~i~0 < 5); {264#(<= main_~i~0 0)} is VALID [2020-07-11 01:07:50,837 INFO L280 TraceCheckUtils]: 6: Hoare triple {264#(<= main_~i~0 0)} #t~post0 := ~i~0; {265#(<= |main_#t~post0| 0)} is VALID [2020-07-11 01:07:50,838 INFO L280 TraceCheckUtils]: 7: Hoare triple {265#(<= |main_#t~post0| 0)} ~i~0 := 1 + #t~post0; {266#(<= main_~i~0 1)} is VALID [2020-07-11 01:07:50,839 INFO L280 TraceCheckUtils]: 8: Hoare triple {266#(<= main_~i~0 1)} havoc #t~post0; {266#(<= main_~i~0 1)} is VALID [2020-07-11 01:07:50,839 INFO L263 TraceCheckUtils]: 9: Hoare triple {266#(<= main_~i~0 1)} call check_error((if 3 != ~i~0 then 1 else 0)); {260#true} is VALID [2020-07-11 01:07:50,840 INFO L280 TraceCheckUtils]: 10: Hoare triple {260#true} ~b := #in~b; {260#true} is VALID [2020-07-11 01:07:50,840 INFO L280 TraceCheckUtils]: 11: Hoare triple {260#true} assume 0 != ~b; {260#true} is VALID [2020-07-11 01:07:50,840 INFO L280 TraceCheckUtils]: 12: Hoare triple {260#true} assume true; {260#true} is VALID [2020-07-11 01:07:50,841 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {260#true} {266#(<= main_~i~0 1)} #42#return; {266#(<= main_~i~0 1)} is VALID [2020-07-11 01:07:50,842 INFO L280 TraceCheckUtils]: 14: Hoare triple {266#(<= main_~i~0 1)} assume !!(~i~0 < 5); {266#(<= main_~i~0 1)} is VALID [2020-07-11 01:07:50,843 INFO L280 TraceCheckUtils]: 15: Hoare triple {266#(<= main_~i~0 1)} #t~post0 := ~i~0; {271#(<= |main_#t~post0| 1)} is VALID [2020-07-11 01:07:50,844 INFO L280 TraceCheckUtils]: 16: Hoare triple {271#(<= |main_#t~post0| 1)} ~i~0 := 1 + #t~post0; {272#(<= main_~i~0 2)} is VALID [2020-07-11 01:07:50,845 INFO L280 TraceCheckUtils]: 17: Hoare triple {272#(<= main_~i~0 2)} havoc #t~post0; {272#(<= main_~i~0 2)} is VALID [2020-07-11 01:07:50,846 INFO L263 TraceCheckUtils]: 18: Hoare triple {272#(<= main_~i~0 2)} call check_error((if 3 != ~i~0 then 1 else 0)); {273#(not (= 0 |check_error_#in~b|))} is VALID [2020-07-11 01:07:50,847 INFO L280 TraceCheckUtils]: 19: Hoare triple {273#(not (= 0 |check_error_#in~b|))} ~b := #in~b; {274#(not (= 0 check_error_~b))} is VALID [2020-07-11 01:07:50,848 INFO L280 TraceCheckUtils]: 20: Hoare triple {274#(not (= 0 check_error_~b))} assume !(0 != ~b); {261#false} is VALID [2020-07-11 01:07:50,848 INFO L263 TraceCheckUtils]: 21: Hoare triple {261#false} call __blast_assert(); {261#false} is VALID [2020-07-11 01:07:50,848 INFO L280 TraceCheckUtils]: 22: Hoare triple {261#false} assume !false; {261#false} is VALID [2020-07-11 01:07:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-11 01:07:50,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991085724] [2020-07-11 01:07:50,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-11 01:07:50,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-11 01:07:50,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462279596] [2020-07-11 01:07:50,853 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-07-11 01:07:50,854 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-11 01:07:50,854 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 9 states. [2020-07-11 01:07:50,881 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:50,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-11 01:07:50,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-11 01:07:50,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-11 01:07:50,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-11 01:07:50,883 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2020-07-11 01:07:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:51,166 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-07-11 01:07:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-11 01:07:51,166 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-07-11 01:07:51,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-11 01:07:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-11 01:07:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 38 transitions. [2020-07-11 01:07:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-07-11 01:07:51,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 38 transitions. [2020-07-11 01:07:51,174 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 38 transitions. [2020-07-11 01:07:51,219 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:51,221 INFO L225 Difference]: With dead ends: 41 [2020-07-11 01:07:51,222 INFO L226 Difference]: Without dead ends: 38 [2020-07-11 01:07:51,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-07-11 01:07:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-11 01:07:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-07-11 01:07:51,265 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-11 01:07:51,265 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand 35 states. [2020-07-11 01:07:51,266 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand 35 states. [2020-07-11 01:07:51,266 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 35 states. [2020-07-11 01:07:51,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:51,270 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-07-11 01:07:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-07-11 01:07:51,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:07:51,271 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:07:51,271 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand 38 states. [2020-07-11 01:07:51,271 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 38 states. [2020-07-11 01:07:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-11 01:07:51,275 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-07-11 01:07:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-07-11 01:07:51,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-11 01:07:51,276 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-11 01:07:51,276 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-11 01:07:51,277 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-11 01:07:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-11 01:07:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-07-11 01:07:51,280 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2020-07-11 01:07:51,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-11 01:07:51,281 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-07-11 01:07:51,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-11 01:07:51,281 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 35 states and 35 transitions. [2020-07-11 01:07:51,326 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-11 01:07:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-07-11 01:07:51,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-11 01:07:51,328 INFO L414 BasicCegarLoop]: Found error trace [2020-07-11 01:07:51,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-11 01:07:51,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-11 01:07:51,329 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-11 01:07:51,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-11 01:07:51,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1072281632, now seen corresponding path program 2 times [2020-07-11 01:07:51,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-11 01:07:51,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359762149] [2020-07-11 01:07:51,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-11 01:07:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 01:07:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-11 01:07:51,385 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-11 01:07:51,385 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-11 01:07:51,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-11 01:07:51,409 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-11 01:07:51,409 WARN L170 areAnnotationChecker]: check_errorENTRY has no Hoare annotation [2020-07-11 01:07:51,409 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 01:07:51,409 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-11 01:07:51,409 WARN L170 areAnnotationChecker]: __blast_assertENTRY has no Hoare annotation [2020-07-11 01:07:51,410 WARN L170 areAnnotationChecker]: __blast_assertENTRY has no Hoare annotation [2020-07-11 01:07:51,410 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-11 01:07:51,410 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-11 01:07:51,410 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-11 01:07:51,411 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-11 01:07:51,411 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:07:51,411 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-11 01:07:51,411 WARN L170 areAnnotationChecker]: __blast_assertFINAL has no Hoare annotation [2020-07-11 01:07:51,411 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-11 01:07:51,412 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-11 01:07:51,412 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-11 01:07:51,412 WARN L170 areAnnotationChecker]: L18-3 has no Hoare annotation [2020-07-11 01:07:51,412 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-11 01:07:51,412 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-11 01:07:51,412 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-11 01:07:51,413 WARN L170 areAnnotationChecker]: __blast_assertEXIT has no Hoare annotation [2020-07-11 01:07:51,413 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2020-07-11 01:07:51,413 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-11 01:07:51,413 WARN L170 areAnnotationChecker]: check_errorEXIT has no Hoare annotation [2020-07-11 01:07:51,413 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-11 01:07:51,414 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-11 01:07:51,414 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-11 01:07:51,414 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-11 01:07:51,414 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-11 01:07:51,414 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-11 01:07:51,414 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-11 01:07:51,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 01:07:51 BoogieIcfgContainer [2020-07-11 01:07:51,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-11 01:07:51,421 INFO L168 Benchmark]: Toolchain (without parser) took 2583.39 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 103.1 MB in the beginning and 92.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 106.6 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:51,422 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-11 01:07:51,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.79 ms. Allocated memory is still 137.9 MB. Free memory was 102.9 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:51,424 INFO L168 Benchmark]: Boogie Preprocessor took 112.24 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 93.4 MB in the beginning and 182.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:51,425 INFO L168 Benchmark]: RCFGBuilder took 315.46 ms. Allocated memory is still 201.9 MB. Free memory was 182.1 MB in the beginning and 166.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:51,426 INFO L168 Benchmark]: TraceAbstraction took 1883.48 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 166.5 MB in the beginning and 92.4 MB in the end (delta: 74.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. [2020-07-11 01:07:51,430 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 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.79 ms. Allocated memory is still 137.9 MB. Free memory was 102.9 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.24 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 93.4 MB in the beginning and 182.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 315.46 ms. Allocated memory is still 201.9 MB. Free memory was 182.1 MB in the beginning and 166.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1883.48 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 166.5 MB in the beginning and 92.4 MB in the end (delta: 74.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] int i=0; VAL [i=0] [L24] COND TRUE i<5 VAL [i=0] [L25] i++ VAL [i=1] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] RET check_error(i!=3) VAL [i=1] [L24] COND TRUE i<5 VAL [i=1] [L25] i++ VAL [i=2] [L29] CALL check_error(i!=3) VAL [\old(b)=1] [L18] (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L29] RET check_error(i!=3) VAL [i=2] [L24] COND TRUE i<5 VAL [i=2] [L25] i++ VAL [i=3] [L29] CALL check_error(i!=3) VAL [\old(b)=0] [L18] (b) ? (0) : __blast_assert () VAL [\old(b)=0, b=0] [L18] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 25 SDslu, 121 SDs, 0 SdLazy, 86 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...