/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:26,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:26,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:27,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 18:44:27,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:44:27,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:44:27,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:44:27,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:44:27,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:44:27,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:44:27,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:44:27,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:44:27,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:44:27,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:44:27,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:44:27,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:44:27,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:44:27,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:27,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:27,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:27,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:44:27,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:27,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:27,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:27,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:27,184 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:27,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:27,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:27,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:27,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:27,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:27,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:27,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:27,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:27,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:27,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:27,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:27,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:27,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:27,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:27,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:27,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:27,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:27,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:27,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:27,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:27,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:27,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:27,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:27,189 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:27,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:27,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:27,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:27,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:27,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:27,663 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:27,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-10-23 18:44:27,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f193a38/32d9d6f15c3749d5ab291edc83a05b54/FLAGde59893e1 [2020-10-23 18:44:28,416 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:28,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-10-23 18:44:28,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f193a38/32d9d6f15c3749d5ab291edc83a05b54/FLAGde59893e1 [2020-10-23 18:44:28,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8f193a38/32d9d6f15c3749d5ab291edc83a05b54 [2020-10-23 18:44:28,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:28,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:28,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:28,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:28,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:28,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:28" (1/1) ... [2020-10-23 18:44:28,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ffa1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:28, skipping insertion in model container [2020-10-23 18:44:28,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:28" (1/1) ... [2020-10-23 18:44:28,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:28,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:29,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:29,026 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:29,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:29,062 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:29,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29 WrapperNode [2020-10-23 18:44:29,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:29,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:29,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:29,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:29,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (1/1) ... [2020-10-23 18:44:29,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (1/1) ... [2020-10-23 18:44:29,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (1/1) ... [2020-10-23 18:44:29,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (1/1) ... [2020-10-23 18:44:29,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (1/1) ... [2020-10-23 18:44:29,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (1/1) ... [2020-10-23 18:44:29,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (1/1) ... [2020-10-23 18:44:29,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:29,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:29,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:29,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:29,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (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 [2020-10-23 18:44:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:44:29,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:29,189 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:44:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:44:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:29,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:29,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:29,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:29,639 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:29,639 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:44:29,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:29 BoogieIcfgContainer [2020-10-23 18:44:29,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:29,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:29,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:29,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:29,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:28" (1/3) ... [2020-10-23 18:44:29,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3597f169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:29, skipping insertion in model container [2020-10-23 18:44:29,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:29" (2/3) ... [2020-10-23 18:44:29,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3597f169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:29, skipping insertion in model container [2020-10-23 18:44:29,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:29" (3/3) ... [2020-10-23 18:44:29,655 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-10-23 18:44:29,669 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:29,680 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:29,697 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:29,738 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:29,738 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:29,738 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:29,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:29,739 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:29,739 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:29,739 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:29,740 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-23 18:44:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:44:29,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:29,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:29,776 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:29,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1946050314, now seen corresponding path program 1 times [2020-10-23 18:44:29,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:29,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43070383] [2020-10-23 18:44:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:30,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43070383] [2020-10-23 18:44:30,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:30,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:44:30,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930595313] [2020-10-23 18:44:30,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:44:30,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:30,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:44:30,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:44:30,193 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-23 18:44:30,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:30,272 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2020-10-23 18:44:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:44:30,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-23 18:44:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:30,284 INFO L225 Difference]: With dead ends: 42 [2020-10-23 18:44:30,284 INFO L226 Difference]: Without dead ends: 19 [2020-10-23 18:44:30,288 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 [2020-10-23 18:44:30,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-23 18:44:30,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-23 18:44:30,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-23 18:44:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-23 18:44:30,333 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-10-23 18:44:30,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:30,334 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-23 18:44:30,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:44:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-23 18:44:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-23 18:44:30,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:30,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:30,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:30,336 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:30,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:30,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1176311083, now seen corresponding path program 1 times [2020-10-23 18:44:30,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:30,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096330619] [2020-10-23 18:44:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:30,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:30,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096330619] [2020-10-23 18:44:30,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:30,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:44:30,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675516226] [2020-10-23 18:44:30,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:44:30,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:30,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:44:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:30,471 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2020-10-23 18:44:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:30,701 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-23 18:44:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:44:30,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-23 18:44:30,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:30,702 INFO L225 Difference]: With dead ends: 32 [2020-10-23 18:44:30,703 INFO L226 Difference]: Without dead ends: 22 [2020-10-23 18:44:30,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:44:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-23 18:44:30,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-23 18:44:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-23 18:44:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-23 18:44:30,713 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2020-10-23 18:44:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:30,713 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-23 18:44:30,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:44:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-23 18:44:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:44:30,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:30,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:30,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:44:30,715 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:30,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1733037939, now seen corresponding path program 1 times [2020-10-23 18:44:30,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:30,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010586205] [2020-10-23 18:44:30,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:30,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:30,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010586205] [2020-10-23 18:44:30,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115287843] [2020-10-23 18:44:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:30,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-23 18:44:30,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:30,970 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 18:44:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:31,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:31,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-10-23 18:44:31,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247902411] [2020-10-23 18:44:31,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 18:44:31,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:31,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 18:44:31,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:44:31,006 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 11 states. [2020-10-23 18:44:31,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:31,314 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-10-23 18:44:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:44:31,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-10-23 18:44:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:31,316 INFO L225 Difference]: With dead ends: 39 [2020-10-23 18:44:31,316 INFO L226 Difference]: Without dead ends: 31 [2020-10-23 18:44:31,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-23 18:44:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-23 18:44:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-10-23 18:44:31,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-23 18:44:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-23 18:44:31,327 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2020-10-23 18:44:31,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:31,327 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-23 18:44:31,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 18:44:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-23 18:44:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 18:44:31,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:31,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:31,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:44:31,544 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:31,546 INFO L82 PathProgramCache]: Analyzing trace with hash 95948546, now seen corresponding path program 1 times [2020-10-23 18:44:31,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:31,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141192878] [2020-10-23 18:44:31,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 18:44:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 18:44:31,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141192878] [2020-10-23 18:44:31,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:31,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 18:44:31,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557109571] [2020-10-23 18:44:31,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:44:31,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:31,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:44:31,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:44:31,655 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2020-10-23 18:44:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:31,870 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-10-23 18:44:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:44:31,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-23 18:44:31,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:31,872 INFO L225 Difference]: With dead ends: 29 [2020-10-23 18:44:31,872 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:44:31,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:44:31,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:44:31,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:44:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:44:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:44:31,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-23 18:44:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:31,874 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:44:31,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:44:31,875 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:44:31,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:44:31,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 18:44:31,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:44:32,216 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:44:32,216 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:44:32,216 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:44:32,216 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:44:32,217 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:44:32,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:32,217 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:44:32,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:32,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:32,218 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:44:32,218 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:44:32,218 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:32,218 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 18:44:32,218 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:32,218 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:32,218 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:32,219 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2020-10-23 18:44:32,219 INFO L274 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-10-23 18:44:32,219 INFO L274 CegarLoopResult]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2020-10-23 18:44:32,219 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (<= 0 main_~x~0))) (or (and .cse0 (= main_~m~0 0)) (and (<= 0 main_~m~0) (<= (+ main_~m~0 1) main_~n~0) .cse0))) [2020-10-23 18:44:32,219 INFO L270 CegarLoopResult]: At program point L28-3(lines 28 33) the Hoare annotation is: (or (= main_~m~0 0) (and (<= 0 main_~m~0) (<= (+ main_~m~0 1) main_~n~0) (<= 0 main_~x~0))) [2020-10-23 18:44:32,219 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 37) no Hoare annotation was computed. [2020-10-23 18:44:32,220 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 37) no Hoare annotation was computed. [2020-10-23 18:44:32,220 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-23 18:44:32,220 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (or (= main_~m~0 0) (and (<= 0 main_~m~0) (<= (+ main_~m~0 1) main_~n~0) (<= 0 main_~x~0))) [2020-10-23 18:44:32,220 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:32,220 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 18:44:32,220 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:32,221 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-23 18:44:32,221 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-23 18:44:32,221 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-23 18:44:32,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:32 BoogieIcfgContainer [2020-10-23 18:44:32,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:32,241 INFO L168 Benchmark]: Toolchain (without parser) took 3439.71 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.2 MB in the beginning and 135.8 MB in the end (delta: -6.6 MB). Peak memory consumption was 73.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:32,242 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:32,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.56 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 119.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:32,244 INFO L168 Benchmark]: Boogie Preprocessor took 36.66 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:32,245 INFO L168 Benchmark]: RCFGBuilder took 540.13 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 136.4 MB in the end (delta: -18.7 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:32,246 INFO L168 Benchmark]: TraceAbstraction took 2593.56 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 135.9 MB in the beginning and 135.8 MB in the end (delta: 172.3 kB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:32,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 125.8 MB. Free memory was 99.9 MB in the beginning and 99.8 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.56 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 119.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.66 ms. Allocated memory is still 153.1 MB. Free memory was 119.1 MB in the beginning and 117.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 540.13 ms. Allocated memory is still 153.1 MB. Free memory was 117.6 MB in the beginning and 136.4 MB in the end (delta: -18.7 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2593.56 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 135.9 MB in the beginning and 135.8 MB in the end (delta: 172.3 kB). Peak memory consumption was 78.9 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: 28]: Loop Invariant Derived loop invariant: (0 <= x && m == 0) || ((0 <= m && m + 1 <= n) && 0 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 96 SDslu, 90 SDs, 0 SdLazy, 192 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 27 PreInvPairs, 36 NumberOfFragments, 85 HoareAnnotationTreeSize, 27 FomulaSimplifications, 98 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 272 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 3923 SizeOfPredicates, 3 NumberOfNonLiveVariables, 89 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 7/9 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...