/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:29:58,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:29:58,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:29:58,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:29:58,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:29:58,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:29:58,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:29:58,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:29:58,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:29:58,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:29:58,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:29:58,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:29:58,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:29:58,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:29:58,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:29:58,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:29:58,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:29:58,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:29:58,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:29:58,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:29:58,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:29:58,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:29:58,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:29:58,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:29:58,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:29:58,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:29:58,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:29:58,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:29:58,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:29:58,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:29:58,732 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:29:58,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:29:58,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:29:58,733 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:29:58,733 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:29:58,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:29:58,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:29:58,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:29:58,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:29:58,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:29:58,735 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:29:59,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:29:59,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:29:59,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:29:59,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:29:59,156 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:29:59,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-10-24 02:29:59,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadd7b27d/b284f6f244594188b2c77a2a1385d2ef/FLAG9836a9d96 [2020-10-24 02:29:59,818 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:29:59,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2020-10-24 02:29:59,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadd7b27d/b284f6f244594188b2c77a2a1385d2ef/FLAG9836a9d96 [2020-10-24 02:30:00,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadd7b27d/b284f6f244594188b2c77a2a1385d2ef [2020-10-24 02:30:00,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:30:00,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:30:00,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:30:00,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:30:00,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:30:00,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e7bff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00, skipping insertion in model container [2020-10-24 02:30:00,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:30:00,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:30:00,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:30:00,434 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:30:00,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:30:00,481 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:30:00,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00 WrapperNode [2020-10-24 02:30:00,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:30:00,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:30:00,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:30:00,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:30:00,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (1/1) ... [2020-10-24 02:30:00,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:30:00,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:30:00,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:30:00,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:30:00,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:30:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:30:00,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:30:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:30:00,633 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:30:00,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:30:00,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:30:00,634 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:30:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:30:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:30:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:30:00,635 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:30:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:30:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:30:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:30:00,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:30:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:30:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:30:00,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:30:00,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:30:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:30:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:30:00,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:30:01,009 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:30:01,010 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:30:01,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:30:01 BoogieIcfgContainer [2020-10-24 02:30:01,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:30:01,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:30:01,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:30:01,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:30:01,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:30:00" (1/3) ... [2020-10-24 02:30:01,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ed3609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:30:01, skipping insertion in model container [2020-10-24 02:30:01,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:30:00" (2/3) ... [2020-10-24 02:30:01,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22ed3609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:30:01, skipping insertion in model container [2020-10-24 02:30:01,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:30:01" (3/3) ... [2020-10-24 02:30:01,021 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-10-24 02:30:01,033 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:30:01,038 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:30:01,066 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:30:01,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:30:01,112 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:30:01,112 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:30:01,112 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:30:01,112 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:30:01,113 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:30:01,113 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:30:01,113 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:30:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-24 02:30:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-24 02:30:01,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:01,139 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] [2020-10-24 02:30:01,140 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:01,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:01,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1351678347, now seen corresponding path program 1 times [2020-10-24 02:30:01,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:01,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060280240] [2020-10-24 02:30:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:30:01,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060280240] [2020-10-24 02:30:01,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:30:01,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:30:01,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930595313] [2020-10-24 02:30:01,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:30:01,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:01,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:30:01,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:30:01,454 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-10-24 02:30:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:01,594 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-24 02:30:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:30:01,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-24 02:30:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:01,612 INFO L225 Difference]: With dead ends: 64 [2020-10-24 02:30:01,617 INFO L226 Difference]: Without dead ends: 37 [2020-10-24 02:30:01,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:30:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-24 02:30:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-24 02:30:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-24 02:30:01,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-24 02:30:01,704 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2020-10-24 02:30:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:01,706 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-24 02:30:01,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:30:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-24 02:30:01,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-24 02:30:01,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:01,709 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] [2020-10-24 02:30:01,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:30:01,710 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1103444181, now seen corresponding path program 1 times [2020-10-24 02:30:01,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:01,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198181000] [2020-10-24 02:30:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:02,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:30:02,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198181000] [2020-10-24 02:30:02,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:30:02,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-24 02:30:02,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845631966] [2020-10-24 02:30:02,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 02:30:02,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:02,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 02:30:02,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:30:02,036 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2020-10-24 02:30:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:02,552 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-10-24 02:30:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 02:30:02,552 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-24 02:30:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:02,554 INFO L225 Difference]: With dead ends: 48 [2020-10-24 02:30:02,554 INFO L226 Difference]: Without dead ends: 40 [2020-10-24 02:30:02,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:30:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-24 02:30:02,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-24 02:30:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-24 02:30:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-10-24 02:30:02,569 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 30 [2020-10-24 02:30:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:02,570 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-10-24 02:30:02,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 02:30:02,570 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-10-24 02:30:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-24 02:30:02,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:30:02,572 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, 1, 1, 1, 1, 1, 1] [2020-10-24 02:30:02,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:30:02,572 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:30:02,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:30:02,573 INFO L82 PathProgramCache]: Analyzing trace with hash 673644348, now seen corresponding path program 1 times [2020-10-24 02:30:02,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:30:02,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279761128] [2020-10-24 02:30:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:30:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:02,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:30:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:30:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:30:02,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279761128] [2020-10-24 02:30:02,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:30:02,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 02:30:02,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605737509] [2020-10-24 02:30:02,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 02:30:02,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:30:02,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 02:30:02,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-24 02:30:02,909 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 13 states. [2020-10-24 02:30:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:30:03,633 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-24 02:30:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:30:03,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-24 02:30:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:30:03,634 INFO L225 Difference]: With dead ends: 40 [2020-10-24 02:30:03,634 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:30:03,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-10-24 02:30:03,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:30:03,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:30:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:30:03,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:30:03,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-24 02:30:03,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:30:03,637 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:30:03,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 02:30:03,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:30:03,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:30:03,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:30:03,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:30:04,187 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-10-24 02:30:04,335 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,335 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,335 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,335 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,336 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,336 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,336 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:30:04,336 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:30:04,337 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,337 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,337 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,337 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,338 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-24 02:30:04,338 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:30:04,338 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:30:04,338 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:30:04,338 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:30:04,338 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:30:04,339 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:30:04,339 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 02:30:04,339 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-24 02:30:04,339 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:30:04,339 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:30:04,339 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:30:04,340 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-10-24 02:30:04,340 INFO L270 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 |main_#t~post6|)) (.cse2 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse0 .cse2) (<= .cse1 .cse0) (<= .cse2 .cse0))) [2020-10-24 02:30:04,340 INFO L270 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: (let ((.cse3 (+ main_~x~0 main_~j~0)) (.cse2 (+ main_~i~0 main_~y~0)) (.cse1 (+ main_~i~0 |main_#t~post6|)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse2 .cse3) (<= .cse3 .cse2) (<= .cse1 .cse0))) [2020-10-24 02:30:04,340 INFO L277 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-10-24 02:30:04,340 INFO L270 CegarLoopResult]: At program point L31-2(lines 31 34) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-10-24 02:30:04,341 INFO L270 CegarLoopResult]: At program point L31-3(lines 24 39) the Hoare annotation is: (let ((.cse2 (+ main_~i~0 main_~y~0)) (.cse6 (+ main_~x~0 main_~j~0))) (let ((.cse4 (<= .cse2 .cse6)) (.cse0 (<= .cse6 .cse2)) (.cse1 (< 0 (+ main_~y~0 1))) (.cse3 (<= main_~y~0 0))) (or (and (or .cse0 .cse1) (or (<= .cse2 main_~j~0) .cse3) (or (<= main_~j~0 .cse2) .cse1) (or .cse4 .cse3) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) (let ((.cse5 (+ main_~y~0 main_~i~0))) (and .cse4 .cse0 (or (<= main_~j~0 .cse5) .cse1) (or .cse3 (<= .cse5 main_~j~0))))))) [2020-10-24 02:30:04,341 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-24 02:30:04,341 INFO L277 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-10-24 02:30:04,341 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-10-24 02:30:04,342 INFO L277 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-10-24 02:30:04,342 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 39) the Hoare annotation is: true [2020-10-24 02:30:04,342 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 24 39) the Hoare annotation is: true [2020-10-24 02:30:04,342 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= main_~y~0 0)) (.cse1 (< 0 (+ main_~y~0 1)))) (or (and .cse0 (<= main_~i~0 main_~x~0) .cse1 (<= main_~x~0 main_~i~0)) (let ((.cse3 (+ main_~x~0 main_~j~0)) (.cse2 (+ main_~i~0 main_~y~0))) (and (<= .cse2 .cse3) (<= .cse3 .cse2) .cse0 .cse1)))) [2020-10-24 02:30:04,342 INFO L270 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-10-24 02:30:04,343 INFO L270 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0)) (.cse2 (+ main_~j~0 |main_#t~post5|))) (and (<= .cse0 .cse1) (<= .cse2 .cse0) (<= .cse1 .cse0) (<= .cse0 .cse2))) [2020-10-24 02:30:04,343 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2020-10-24 02:30:04,343 INFO L270 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: (let ((.cse0 (+ main_~j~0 |main_#t~post5|)) (.cse1 (+ main_~i~0 main_~y~0)) (.cse2 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse2 .cse1) (<= .cse1 .cse0) (<= .cse1 .cse2))) [2020-10-24 02:30:04,343 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 39) the Hoare annotation is: true [2020-10-24 02:30:04,343 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-24 02:30:04,343 INFO L277 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-10-24 02:30:04,344 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-24 02:30:04,344 INFO L277 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-10-24 02:30:04,344 INFO L277 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: true [2020-10-24 02:30:04,344 INFO L277 CegarLoopResult]: At program point L35(lines 35 37) the Hoare annotation is: true [2020-10-24 02:30:04,344 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-10-24 02:30:04,344 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-24 02:30:04,345 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2020-10-24 02:30:04,345 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:30:04,345 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:30:04,345 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:30:04,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:30:04 BoogieIcfgContainer [2020-10-24 02:30:04,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:30:04,365 INFO L168 Benchmark]: Toolchain (without parser) took 4196.71 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 137.6 MB in the beginning and 137.7 MB in the end (delta: -36.1 kB). Peak memory consumption was 107.8 MB. Max. memory is 8.0 GB. [2020-10-24 02:30:04,366 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 136.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:30:04,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.66 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 127.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:30:04,368 INFO L168 Benchmark]: Boogie Preprocessor took 64.13 ms. Allocated memory is still 161.5 MB. Free memory was 127.6 MB in the beginning and 126.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:30:04,369 INFO L168 Benchmark]: RCFGBuilder took 463.95 ms. Allocated memory is still 161.5 MB. Free memory was 126.1 MB in the beginning and 110.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-24 02:30:04,370 INFO L168 Benchmark]: TraceAbstraction took 3349.24 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 110.0 MB in the beginning and 137.7 MB in the end (delta: -27.6 MB). Peak memory consumption was 79.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:30:04,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 161.5 MB. Free memory is still 136.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.66 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 127.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.13 ms. Allocated memory is still 161.5 MB. Free memory was 127.6 MB in the beginning and 126.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 463.95 ms. Allocated memory is still 161.5 MB. Free memory was 126.1 MB in the beginning and 110.6 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3349.24 ms. Allocated memory was 161.5 MB in the beginning and 195.0 MB in the end (delta: 33.6 MB). Free memory was 110.0 MB in the beginning and 137.7 MB in the end (delta: -27.6 MB). Peak memory consumption was 79.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 31]: Loop Invariant Derived loop invariant: i + y <= x + j && x + j <= i + y - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 106 SDslu, 181 SDs, 0 SdLazy, 315 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 49 LocationsWithAnnotation, 73 PreInvPairs, 89 NumberOfFragments, 378 HoareAnnotationTreeSize, 73 FomulaSimplifications, 500 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 49 FomulaSimplificationsInter, 741 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 13498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 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...