/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/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:38:20,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:38:20,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:38:20,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:38:20,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:38:20,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:38:20,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:38:20,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:38:20,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:38:20,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:38:20,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:38:20,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:38:20,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:38:20,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:38:20,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:38:20,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:38:20,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:38:20,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:38:20,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:38:20,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:38:20,192 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 02:38:20,216 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:38:20,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:38:20,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:38:20,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:38:20,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:38:20,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:38:20,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:38:20,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:38:20,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:38:20,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:38:20,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:38:20,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:38:20,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:38:20,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:38:20,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:38:20,221 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:38:20,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:38:20,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:38:20,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:38:20,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:38:20,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:38:20,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:38:20,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:38:20,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:38:20,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:38:20,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:38:20,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:38:20,680 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:38:20,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-10-24 02:38:20,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f063361/ecf9f00bf9c844edbee5d2fc9435e93a/FLAG3c8c06f81 [2020-10-24 02:38:21,406 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:38:21,407 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2020-10-24 02:38:21,416 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f063361/ecf9f00bf9c844edbee5d2fc9435e93a/FLAG3c8c06f81 [2020-10-24 02:38:21,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44f063361/ecf9f00bf9c844edbee5d2fc9435e93a [2020-10-24 02:38:21,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:38:21,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:38:21,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:38:21,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:38:21,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:38:21,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:38:21" (1/1) ... [2020-10-24 02:38:21,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8f7d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:21, skipping insertion in model container [2020-10-24 02:38:21,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:38:21" (1/1) ... [2020-10-24 02:38:21,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:38:21,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:38:21,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:38:21,975 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:38:21,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:38:22,011 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:38:22,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22 WrapperNode [2020-10-24 02:38:22,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:38:22,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:38:22,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:38:22,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:38:22,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (1/1) ... [2020-10-24 02:38:22,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (1/1) ... [2020-10-24 02:38:22,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (1/1) ... [2020-10-24 02:38:22,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (1/1) ... [2020-10-24 02:38:22,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (1/1) ... [2020-10-24 02:38:22,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (1/1) ... [2020-10-24 02:38:22,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (1/1) ... [2020-10-24 02:38:22,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:38:22,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:38:22,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:38:22,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:38:22,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (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 02:38:22,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:38:22,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:38:22,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:38:22,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:38:22,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:38:22,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:38:22,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:38:22,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:38:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:38:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:38:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:38:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:38:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:38:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:38:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:38:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:38:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:38:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:38:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:38:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:38:22,563 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:38:22,564 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:38:22,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:38:22 BoogieIcfgContainer [2020-10-24 02:38:22,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:38:22,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:38:22,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:38:22,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:38:22,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:38:21" (1/3) ... [2020-10-24 02:38:22,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbefd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:38:22, skipping insertion in model container [2020-10-24 02:38:22,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:38:22" (2/3) ... [2020-10-24 02:38:22,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fbefd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:38:22, skipping insertion in model container [2020-10-24 02:38:22,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:38:22" (3/3) ... [2020-10-24 02:38:22,598 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2020-10-24 02:38:22,632 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:38:22,638 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:38:22,654 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:38:22,690 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:38:22,690 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:38:22,690 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:38:22,690 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:38:22,690 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:38:22,691 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:38:22,691 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:38:22,691 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:38:22,712 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-24 02:38:22,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-24 02:38:22,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:38:22,726 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] [2020-10-24 02:38:22,727 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:38:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:38:22,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1214645873, now seen corresponding path program 1 times [2020-10-24 02:38:22,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:38:22,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932740614] [2020-10-24 02:38:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:38:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:38:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:23,141 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 02:38:23,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932740614] [2020-10-24 02:38:23,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:38:23,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 02:38:23,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592992049] [2020-10-24 02:38:23,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 02:38:23,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:38:23,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 02:38:23,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:38:23,176 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-10-24 02:38:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:38:23,302 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-24 02:38:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 02:38:23,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-24 02:38:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:38:23,313 INFO L225 Difference]: With dead ends: 59 [2020-10-24 02:38:23,314 INFO L226 Difference]: Without dead ends: 35 [2020-10-24 02:38:23,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 02:38:23,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-24 02:38:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-24 02:38:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-24 02:38:23,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-24 02:38:23,381 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 28 [2020-10-24 02:38:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:38:23,382 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-24 02:38:23,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 02:38:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-24 02:38:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-24 02:38:23,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:38:23,384 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] [2020-10-24 02:38:23,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:38:23,385 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:38:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:38:23,386 INFO L82 PathProgramCache]: Analyzing trace with hash 785208608, now seen corresponding path program 1 times [2020-10-24 02:38:23,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:38:23,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633577271] [2020-10-24 02:38:23,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:38:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:23,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:38:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:23,614 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 02:38:23,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633577271] [2020-10-24 02:38:23,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:38:23,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:38:23,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805910216] [2020-10-24 02:38:23,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:38:23,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:38:23,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:38:23,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:38:23,620 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2020-10-24 02:38:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:38:23,945 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-10-24 02:38:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:38:23,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-24 02:38:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:38:23,950 INFO L225 Difference]: With dead ends: 48 [2020-10-24 02:38:23,950 INFO L226 Difference]: Without dead ends: 42 [2020-10-24 02:38:23,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:38:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-24 02:38:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-24 02:38:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-24 02:38:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-10-24 02:38:23,969 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 28 [2020-10-24 02:38:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:38:23,970 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-10-24 02:38:23,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:38:23,970 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-10-24 02:38:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-24 02:38:23,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:38:23,971 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] [2020-10-24 02:38:23,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:38:23,972 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:38:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:38:23,973 INFO L82 PathProgramCache]: Analyzing trace with hash 2038881921, now seen corresponding path program 1 times [2020-10-24 02:38:23,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:38:23,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029177390] [2020-10-24 02:38:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:38:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:38:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:38:24,201 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 02:38:24,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029177390] [2020-10-24 02:38:24,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:38:24,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:38:24,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078099103] [2020-10-24 02:38:24,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:38:24,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:38:24,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:38:24,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:38:24,204 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 7 states. [2020-10-24 02:38:24,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:38:24,488 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-24 02:38:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:38:24,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-24 02:38:24,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:38:24,490 INFO L225 Difference]: With dead ends: 42 [2020-10-24 02:38:24,490 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:38:24,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:38:24,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:38:24,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:38:24,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:38:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:38:24,493 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-24 02:38:24,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:38:24,493 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:38:24,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:38:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:38:24,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:38:24,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:38:24,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:38:25,124 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,125 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,125 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,125 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,126 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:38:25,126 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:38:25,126 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:38:25,126 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-24 02:38:25,126 INFO L277 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,127 INFO L277 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,127 INFO L277 CegarLoopResult]: At program point L7-2(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,127 INFO L277 CegarLoopResult]: At program point L7-3(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,127 INFO L277 CegarLoopResult]: At program point L7-4(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,127 INFO L277 CegarLoopResult]: At program point L7-5(line 7) the Hoare annotation is: true [2020-10-24 02:38:25,127 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:38:25,128 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:38:25,128 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:38:25,128 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:38:25,128 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:38:25,128 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2020-10-24 02:38:25,129 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-10-24 02:38:25,129 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-10-24 02:38:25,129 INFO L274 CegarLoopResult]: For program point L10-3(lines 9 11) no Hoare annotation was computed. [2020-10-24 02:38:25,129 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-10-24 02:38:25,129 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-10-24 02:38:25,129 INFO L270 CegarLoopResult]: At program point L27-1(lines 27 30) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-10-24 02:38:25,130 INFO L270 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-10-24 02:38:25,130 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 20 34) the Hoare annotation is: true [2020-10-24 02:38:25,130 INFO L277 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-10-24 02:38:25,130 INFO L270 CegarLoopResult]: At program point L27-4(line 27) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-10-24 02:38:25,130 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 31) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-10-24 02:38:25,130 INFO L277 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-10-24 02:38:25,131 INFO L270 CegarLoopResult]: At program point L27-5(lines 25 31) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-10-24 02:38:25,131 INFO L277 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-10-24 02:38:25,131 INFO L277 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: true [2020-10-24 02:38:25,131 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 20 34) the Hoare annotation is: true [2020-10-24 02:38:25,131 INFO L277 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-10-24 02:38:25,131 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-10-24 02:38:25,132 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2020-10-24 02:38:25,132 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2020-10-24 02:38:25,132 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-10-24 02:38:25,132 INFO L270 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (= main_~i~0 0) [2020-10-24 02:38:25,132 INFO L277 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-10-24 02:38:25,133 INFO L277 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true [2020-10-24 02:38:25,133 INFO L277 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: true [2020-10-24 02:38:25,133 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2020-10-24 02:38:25,133 INFO L270 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:38:25,133 INFO L270 CegarLoopResult]: At program point L13(lines 13 15) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:38:25,134 INFO L270 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:38:25,134 INFO L277 CegarLoopResult]: At program point L13-2(lines 12 17) the Hoare annotation is: true [2020-10-24 02:38:25,134 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 12 17) the Hoare annotation is: true [2020-10-24 02:38:25,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:38:25 BoogieIcfgContainer [2020-10-24 02:38:25,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:38:25,167 INFO L168 Benchmark]: Toolchain (without parser) took 3413.86 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 131.3 MB in the beginning and 165.2 MB in the end (delta: -33.9 MB). Peak memory consumption was 88.6 MB. Max. memory is 8.0 GB. [2020-10-24 02:38:25,168 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory was 128.6 MB in the beginning and 128.5 MB in the end (delta: 135.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:38:25,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.61 ms. Allocated memory is still 154.1 MB. Free memory was 130.7 MB in the beginning and 121.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:38:25,170 INFO L168 Benchmark]: Boogie Preprocessor took 40.43 ms. Allocated memory is still 154.1 MB. Free memory was 121.4 MB in the beginning and 120.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:38:25,171 INFO L168 Benchmark]: RCFGBuilder took 515.38 ms. Allocated memory is still 154.1 MB. Free memory was 120.0 MB in the beginning and 136.9 MB in the end (delta: -17.0 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-24 02:38:25,173 INFO L168 Benchmark]: TraceAbstraction took 2580.17 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 136.4 MB in the beginning and 165.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 93.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:38:25,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 154.1 MB. Free memory was 128.6 MB in the beginning and 128.5 MB in the end (delta: 135.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.61 ms. Allocated memory is still 154.1 MB. Free memory was 130.7 MB in the beginning and 121.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.43 ms. Allocated memory is still 154.1 MB. Free memory was 121.4 MB in the beginning and 120.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 515.38 ms. Allocated memory is still 154.1 MB. Free memory was 120.0 MB in the beginning and 136.9 MB in the end (delta: -17.0 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2580.17 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 136.4 MB in the beginning and 165.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 93.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 25]: Loop Invariant Derived loop invariant: i == i / 3 * 3 - ProcedureContractResult [Line: 7]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 100 SDslu, 109 SDs, 0 SdLazy, 163 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 46 LocationsWithAnnotation, 66 PreInvPairs, 84 NumberOfFragments, 140 HoareAnnotationTreeSize, 66 FomulaSimplifications, 864 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 46 FomulaSimplificationsInter, 1159 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 6604 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...