/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-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:36:20,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:36:20,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:36:20,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 06:36:21,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:36:21,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:36:21,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:36:21,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:36:21,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:36:21,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:36:21,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:36:21,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:36:21,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:36:21,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:36:21,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:36:21,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:36:21,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:36:21,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:36:21,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:36:21,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:36:21,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:36:21,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:36:21,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:36:21,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:36:21,133 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:36:21,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:36:21,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:36:21,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:36:21,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:36:21,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:36:21,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:36:21,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:36:21,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:36:21,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:36:21,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:36:21,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:36:21,138 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:36:21,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:36:21,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:36:21,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:36:21,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:36:21,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:36:21,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:36:21,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:36:21,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:36:21,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:36:21,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:36:21,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:36:21,565 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:36:21,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-07 06:36:21,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee50925e9/1d23cd99700e42659a9e33168297b83a/FLAGc935b1ed1 [2020-11-07 06:36:22,188 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:36:22,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-07 06:36:22,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee50925e9/1d23cd99700e42659a9e33168297b83a/FLAGc935b1ed1 [2020-11-07 06:36:22,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee50925e9/1d23cd99700e42659a9e33168297b83a [2020-11-07 06:36:22,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:36:22,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:36:22,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:36:22,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:36:22,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:36:22,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24235fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22, skipping insertion in model container [2020-11-07 06:36:22,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:36:22,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:36:22,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:36:22,770 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:36:22,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:36:22,803 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:36:22,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22 WrapperNode [2020-11-07 06:36:22,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:36:22,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:36:22,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:36:22,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:36:22,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (1/1) ... [2020-11-07 06:36:22,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:36:22,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:36:22,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:36:22,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:36:22,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (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 [2020-11-07 06:36:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:36:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:36:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:36:22,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 06:36:22,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:36:22,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:36:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:36:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:36:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 06:36:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 06:36:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:36:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:36:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 06:36:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:36:22,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 06:36:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:36:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:36:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:36:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:36:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:36:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:36:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:36:23,508 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:36:23,508 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:36:23,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:36:23 BoogieIcfgContainer [2020-11-07 06:36:23,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:36:23,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:36:23,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:36:23,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:36:23,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:36:22" (1/3) ... [2020-11-07 06:36:23,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b2f7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:36:23, skipping insertion in model container [2020-11-07 06:36:23,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:36:22" (2/3) ... [2020-11-07 06:36:23,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b2f7d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:36:23, skipping insertion in model container [2020-11-07 06:36:23,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:36:23" (3/3) ... [2020-11-07 06:36:23,525 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-11-07 06:36:23,543 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:36:23,550 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:36:23,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:36:23,598 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:36:23,599 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:36:23,599 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:36:23,599 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:36:23,599 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:36:23,599 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:36:23,600 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:36:23,600 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:36:23,619 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-07 06:36:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 06:36:23,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:36:23,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:36:23,635 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:36:23,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:36:23,646 INFO L82 PathProgramCache]: Analyzing trace with hash -808329830, now seen corresponding path program 1 times [2020-11-07 06:36:23,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:36:23,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185241079] [2020-11-07 06:36:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:36:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:23,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:36:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:36:24,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185241079] [2020-11-07 06:36:24,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:36:24,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 06:36:24,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054385300] [2020-11-07 06:36:24,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:36:24,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:36:24,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:36:24,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:36:24,038 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 8 states. [2020-11-07 06:36:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:36:24,605 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2020-11-07 06:36:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-07 06:36:24,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-11-07 06:36:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:36:24,631 INFO L225 Difference]: With dead ends: 92 [2020-11-07 06:36:24,631 INFO L226 Difference]: Without dead ends: 58 [2020-11-07 06:36:24,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-07 06:36:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-07 06:36:24,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-11-07 06:36:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-07 06:36:24,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-11-07 06:36:24,714 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 46 [2020-11-07 06:36:24,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:36:24,715 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-11-07 06:36:24,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:36:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-11-07 06:36:24,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-07 06:36:24,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:36:24,720 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:36:24,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:36:24,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:36:24,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:36:24,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1847064117, now seen corresponding path program 1 times [2020-11-07 06:36:24,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:36:24,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457118588] [2020-11-07 06:36:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:36:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:36:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:24,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 06:36:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:36:25,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457118588] [2020-11-07 06:36:25,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:36:25,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 06:36:25,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356394073] [2020-11-07 06:36:25,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 06:36:25,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:36:25,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 06:36:25,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-07 06:36:25,005 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 10 states. [2020-11-07 06:36:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:36:25,507 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-11-07 06:36:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-07 06:36:25,508 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-11-07 06:36:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:36:25,510 INFO L225 Difference]: With dead ends: 70 [2020-11-07 06:36:25,511 INFO L226 Difference]: Without dead ends: 66 [2020-11-07 06:36:25,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-11-07 06:36:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-07 06:36:25,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-11-07 06:36:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-07 06:36:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-11-07 06:36:25,533 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 51 [2020-11-07 06:36:25,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:36:25,533 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-11-07 06:36:25,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 06:36:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-11-07 06:36:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-07 06:36:25,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:36:25,537 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:36:25,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:36:25,537 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:36:25,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:36:25,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1467554325, now seen corresponding path program 1 times [2020-11-07 06:36:25,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:36:25,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004903758] [2020-11-07 06:36:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:36:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:25,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:36:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:25,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 06:36:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:25,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 06:36:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:25,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 06:36:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-07 06:36:25,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004903758] [2020-11-07 06:36:25,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:36:25,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-07 06:36:25,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585334292] [2020-11-07 06:36:25,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 06:36:25,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:36:25,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 06:36:25,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-11-07 06:36:25,818 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 15 states. [2020-11-07 06:36:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:36:26,862 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2020-11-07 06:36:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 06:36:26,865 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-11-07 06:36:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:36:26,867 INFO L225 Difference]: With dead ends: 81 [2020-11-07 06:36:26,867 INFO L226 Difference]: Without dead ends: 77 [2020-11-07 06:36:26,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2020-11-07 06:36:26,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-07 06:36:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-11-07 06:36:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-07 06:36:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-11-07 06:36:26,888 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 66 [2020-11-07 06:36:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:36:26,888 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-11-07 06:36:26,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 06:36:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-11-07 06:36:26,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-07 06:36:26,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:36:26,890 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:36:26,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:36:26,891 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:36:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:36:26,891 INFO L82 PathProgramCache]: Analyzing trace with hash 271569781, now seen corresponding path program 2 times [2020-11-07 06:36:26,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:36:26,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311510316] [2020-11-07 06:36:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:36:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:27,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:36:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 06:36:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 06:36:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-11-07 06:36:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-11-07 06:36:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:27,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-11-07 06:36:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:36:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-07 06:36:27,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311510316] [2020-11-07 06:36:27,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:36:27,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-11-07 06:36:27,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506505399] [2020-11-07 06:36:27,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 06:36:27,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:36:27,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 06:36:27,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-11-07 06:36:27,254 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand 17 states. [2020-11-07 06:36:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:36:28,342 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-11-07 06:36:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-07 06:36:28,345 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-11-07 06:36:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:36:28,346 INFO L225 Difference]: With dead ends: 76 [2020-11-07 06:36:28,346 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:36:28,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 06:36:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:36:28,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:36:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:36:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:36:28,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2020-11-07 06:36:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:36:28,352 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:36:28,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 06:36:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:36:28,355 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:36:28,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 06:36:28,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:36:29,348 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,348 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,348 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,349 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,349 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,349 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,349 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:36:29,350 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:36:29,350 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,350 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,350 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,351 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,351 INFO L262 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)|)) [2020-11-07 06:36:29,351 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 06:36:29,351 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:36:29,351 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:36:29,352 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:36:29,352 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:36:29,352 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:36:29,352 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-07 06:36:29,352 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-07 06:36:29,352 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:36:29,352 INFO L266 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:36:29,353 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-07 06:36:29,353 INFO L269 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-11-07 06:36:29,353 INFO L269 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-11-07 06:36:29,353 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 56) the Hoare annotation is: true [2020-11-07 06:36:29,353 INFO L262 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (and (<= 1 main_~leader_len~0) (= main_~p~0 0)) [2020-11-07 06:36:29,353 INFO L262 CegarLoopResult]: At program point L40(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-11-07 06:36:29,354 INFO L269 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: true [2020-11-07 06:36:29,354 INFO L269 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: true [2020-11-07 06:36:29,354 INFO L269 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-11-07 06:36:29,354 INFO L269 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true [2020-11-07 06:36:29,354 INFO L269 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: true [2020-11-07 06:36:29,354 INFO L269 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-11-07 06:36:29,354 INFO L262 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (and (<= 1 main_~p~0) (<= (+ main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 (* 2 main_~ielen~0)) main_~bufsize_0~0)) [2020-11-07 06:36:29,355 INFO L262 CegarLoopResult]: At program point L49-3(lines 49 53) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0) 2))) [2020-11-07 06:36:29,355 INFO L262 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (and (<= 1 main_~leader_len~0) (= main_~p~0 0) (<= main_~bufsize~0 main_~bufsize_0~0)) [2020-11-07 06:36:29,355 INFO L262 CegarLoopResult]: At program point L49-4(line 49) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~ielen~0) main_~p~0))) (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= .cse0 (+ main_~bufsize_0~0 (* 2 main_~i~0) 2)) (<= .cse0 (+ main_~bufsize_0~0 (* 2 |main_#t~post6|) 2)))) [2020-11-07 06:36:29,355 INFO L262 CegarLoopResult]: At program point L49-5(line 49) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~ielen~0) main_~p~0))) (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= .cse0 (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= .cse0 (+ main_~bufsize_0~0 (* 2 |main_#t~post6|) 2)))) [2020-11-07 06:36:29,356 INFO L262 CegarLoopResult]: At program point L49-6(lines 49 53) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0)))) [2020-11-07 06:36:29,356 INFO L269 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-11-07 06:36:29,356 INFO L269 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true [2020-11-07 06:36:29,356 INFO L269 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-11-07 06:36:29,356 INFO L269 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-11-07 06:36:29,356 INFO L269 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-11-07 06:36:29,357 INFO L269 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-11-07 06:36:29,357 INFO L269 CegarLoopResult]: At program point L54(lines 24 56) the Hoare annotation is: true [2020-11-07 06:36:29,357 INFO L262 CegarLoopResult]: At program point L50(line 50) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-11-07 06:36:29,357 INFO L262 CegarLoopResult]: At program point L50-1(line 50) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-11-07 06:36:29,357 INFO L262 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (<= 1 main_~leader_len~0) (= main_~p~0 0) (<= (+ main_~leader_len~0 main_~bufsize~0) main_~bufsize_0~0)) [2020-11-07 06:36:29,358 INFO L269 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: true [2020-11-07 06:36:29,358 INFO L262 CegarLoopResult]: At program point L38-1(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-11-07 06:36:29,358 INFO L269 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-11-07 06:36:29,358 INFO L269 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: true [2020-11-07 06:36:29,358 INFO L269 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: true [2020-11-07 06:36:29,358 INFO L269 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-11-07 06:36:29,358 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 56) the Hoare annotation is: true [2020-11-07 06:36:29,359 INFO L262 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: (and (<= 1 main_~p~0) (<= 1 main_~leader_len~0) (<= (+ (* 2 main_~ielen~0) main_~p~0) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= (+ main_~p~0 2) main_~bufsize_0~0)) [2020-11-07 06:36:29,359 INFO L262 CegarLoopResult]: At program point L47(lines 47 48) the Hoare annotation is: (and (<= 1 main_~p~0) (<= (+ main_~bufsize~0 main_~p~0) main_~bufsize_0~0) (<= 1 main_~leader_len~0)) [2020-11-07 06:36:29,359 INFO L262 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-11-07 06:36:29,359 INFO L262 CegarLoopResult]: At program point L39(lines 25 56) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-11-07 06:36:29,359 INFO L269 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-11-07 06:36:29,359 INFO L262 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: (<= 1 main_~leader_len~0) [2020-11-07 06:36:29,360 INFO L262 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:36:29,360 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-07 06:36:29,360 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:36:29,360 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:36:29,360 INFO L262 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:36:29,360 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:36:29,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:36:29 BoogieIcfgContainer [2020-11-07 06:36:29,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:36:29,391 INFO L168 Benchmark]: Toolchain (without parser) took 6829.98 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 126.7 MB in the beginning and 197.2 MB in the end (delta: -70.6 MB). Peak memory consumption was 134.9 MB. Max. memory is 8.0 GB. [2020-11-07 06:36:29,392 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:36:29,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.20 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:36:29,393 INFO L168 Benchmark]: Boogie Preprocessor took 33.01 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 06:36:29,394 INFO L168 Benchmark]: RCFGBuilder took 671.77 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 96.3 MB in the end (delta: 18.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-11-07 06:36:29,395 INFO L168 Benchmark]: TraceAbstraction took 5871.26 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 95.9 MB in the beginning and 197.2 MB in the end (delta: -101.3 MB). Peak memory consumption was 103.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:36:29,399 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 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 241.20 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.01 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 671.77 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 96.3 MB in the end (delta: 18.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5871.26 ms. Allocated memory was 151.0 MB in the beginning and 242.2 MB in the end (delta: 91.2 MB). Free memory was 95.9 MB in the beginning and 197.2 MB in the end (delta: -101.3 MB). Peak memory consumption was 103.4 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: 49]: Loop Invariant Derived loop invariant: (1 <= p && 1 <= leader_len) && 2 * ielen + p <= bufsize_0 + 2 * i - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - 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: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 202 SDtfs, 234 SDslu, 390 SDs, 0 SdLazy, 1252 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 65 LocationsWithAnnotation, 125 PreInvPairs, 162 NumberOfFragments, 339 HoareAnnotationTreeSize, 125 FomulaSimplifications, 563 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 65 FomulaSimplificationsInter, 1481 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 48550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 72/86 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...