/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:34:43,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:34:43,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:34:43,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:34:43,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:34:43,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:34:43,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:34:43,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:34:43,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:34:43,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:34:43,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:34:43,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:34:43,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:34:43,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:34:43,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:34:43,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:34:43,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:34:43,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:34:43,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:34:43,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:34:43,652 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 [2021-05-02 13:34:43,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:34:43,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:34:43,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:34:43,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:34:43,687 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:34:43,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:34:43,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:34:43,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:34:43,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:34:43,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:34:43,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:34:43,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:34:43,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:34:43,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:34:43,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:34:43,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:34:43,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:34:43,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:34:43,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:34:43,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:34:43,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:34:43,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:34:43,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:34:43,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:34:43,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:34:43,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:34:43,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:34:43,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:34:43,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:34:43,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:34:43,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:34:43,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:34:43,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:34:43,956 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:34:43,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i [2021-05-02 13:34:44,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759de3ba5/9eb0807df64447f8a2f6e0456e8691fa/FLAG95b525420 [2021-05-02 13:34:44,379 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:34:44,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i [2021-05-02 13:34:44,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759de3ba5/9eb0807df64447f8a2f6e0456e8691fa/FLAG95b525420 [2021-05-02 13:34:44,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759de3ba5/9eb0807df64447f8a2f6e0456e8691fa [2021-05-02 13:34:44,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:34:44,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:34:44,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:34:44,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:34:44,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:34:44,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0f714d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44, skipping insertion in model container [2021-05-02 13:34:44,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:34:44,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:34:44,550 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-05-02 13:34:44,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:34:44,572 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:34:44,583 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-05-02 13:34:44,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:34:44,600 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:34:44,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44 WrapperNode [2021-05-02 13:34:44,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:34:44,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:34:44,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:34:44,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:34:44,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (1/1) ... [2021-05-02 13:34:44,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:34:44,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:34:44,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:34:44,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:34:44,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (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 [2021-05-02 13:34:44,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:34:44,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:34:44,815 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:34:44,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:34:44,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:34:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:34:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 13:34:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 13:34:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:34:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:34:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 13:34:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 13:34:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:34:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:34:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:34:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:34:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:34:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:34:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:34:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:34:44,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:34:44,997 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 13:34:44,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:34:44 BoogieIcfgContainer [2021-05-02 13:34:44,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:34:44,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:34:44,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:34:45,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:34:45,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:34:44" (1/3) ... [2021-05-02 13:34:45,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac56603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:34:45, skipping insertion in model container [2021-05-02 13:34:45,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:34:44" (2/3) ... [2021-05-02 13:34:45,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac56603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:34:45, skipping insertion in model container [2021-05-02 13:34:45,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:34:44" (3/3) ... [2021-05-02 13:34:45,003 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2021-05-02 13:34:45,007 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:34:45,010 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:34:45,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:34:45,038 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:34:45,038 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:34:45,038 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:34:45,039 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:34:45,039 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:34:45,039 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:34:45,039 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:34:45,039 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:34:45,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 13:34:45,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:34:45,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:34:45,053 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:34:45,053 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:34:45,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:34:45,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1005951186, now seen corresponding path program 1 times [2021-05-02 13:34:45,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:34:45,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758507831] [2021-05-02 13:34:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:34:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:45,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:34:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:45,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:34:45,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758507831] [2021-05-02 13:34:45,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758507831] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:34:45,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:34:45,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 13:34:45,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37698861] [2021-05-02 13:34:45,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 13:34:45,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:34:45,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 13:34:45,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 13:34:45,239 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:34:45,322 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-05-02 13:34:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 13:34:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 13:34:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:34:45,327 INFO L225 Difference]: With dead ends: 34 [2021-05-02 13:34:45,327 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 13:34:45,329 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:34:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 13:34:45,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 13:34:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 13:34:45,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-02 13:34:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:34:45,352 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 13:34:45,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 13:34:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 13:34:45,353 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:34:45,353 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:34:45,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:34:45,353 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:34:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:34:45,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1392462319, now seen corresponding path program 1 times [2021-05-02 13:34:45,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:34:45,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843573953] [2021-05-02 13:34:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:34:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:34:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:45,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:34:45,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843573953] [2021-05-02 13:34:45,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843573953] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:34:45,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998528465] [2021-05-02 13:34:45,495 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 [2021-05-02 13:34:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:45,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 13:34:45,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:34:45,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:45,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:45,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:45,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:45,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:45,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:45,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998528465] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:34:45,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:34:45,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-05-02 13:34:45,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613702248] [2021-05-02 13:34:45,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 13:34:45,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:34:45,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 13:34:45,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-05-02 13:34:45,755 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:46,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:34:46,028 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-02 13:34:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 13:34:46,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 13:34:46,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:34:46,030 INFO L225 Difference]: With dead ends: 26 [2021-05-02 13:34:46,030 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 13:34:46,031 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 313.2ms TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-05-02 13:34:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 13:34:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-02 13:34:46,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 13:34:46,034 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-02 13:34:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:34:46,034 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 13:34:46,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:46,034 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 13:34:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 13:34:46,035 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:34:46,035 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:34:46,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 13:34:46,248 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:34:46,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:34:46,249 INFO L82 PathProgramCache]: Analyzing trace with hash -832493620, now seen corresponding path program 2 times [2021-05-02 13:34:46,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:34:46,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114867453] [2021-05-02 13:34:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:34:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:46,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:34:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:34:46,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:46,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:34:46,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114867453] [2021-05-02 13:34:46,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114867453] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:34:46,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392924428] [2021-05-02 13:34:46,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:34:46,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 13:34:46,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 13:34:46,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 13:34:46,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:34:46,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:46,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:46,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:46,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:46,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:46,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:46,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:46,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 13:34:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:34:46,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392924428] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:34:46,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:34:46,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 14 [2021-05-02 13:34:46,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767642778] [2021-05-02 13:34:46,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 13:34:46,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:34:46,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 13:34:46,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 13:34:46,557 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:34:46,773 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-05-02 13:34:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 13:34:46,774 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-02 13:34:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:34:46,774 INFO L225 Difference]: With dead ends: 21 [2021-05-02 13:34:46,774 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 13:34:46,775 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 289.5ms TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-05-02 13:34:46,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 13:34:46,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 13:34:46,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 13:34:46,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 13:34:46,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-05-02 13:34:46,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:34:46,775 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 13:34:46,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 13:34:46,775 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 13:34:46,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 13:34:46,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 13:34:46,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 13:34:47,081 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-02 13:34:47,081 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-02 13:34:47,081 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-02 13:34:47,081 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:34:47,082 INFO L194 CegarLoopUtils]: 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)|)) [2021-05-02 13:34:47,082 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:34:47,082 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:34:47,082 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 13:34:47,082 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 13:34:47,082 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:34:47,082 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 30) the Hoare annotation is: true [2021-05-02 13:34:47,082 INFO L198 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-05-02 13:34:47,082 INFO L198 CegarLoopUtils]: For program point L26(line 26) no Hoare annotation was computed. [2021-05-02 13:34:47,082 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 19 30) no Hoare annotation was computed. [2021-05-02 13:34:47,082 INFO L194 CegarLoopUtils]: At program point L26-2(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= main_~x~0 main_~y~0))) (or (and .cse0 (<= main_~y~0 main_~n~0) (<= main_~y~0 main_~x~0)) (and .cse0 (<= (+ main_~y~0 1) main_~n~0)))) [2021-05-02 13:34:47,082 INFO L198 CegarLoopUtils]: For program point L23(line 23) no Hoare annotation was computed. [2021-05-02 13:34:47,083 INFO L194 CegarLoopUtils]: At program point L24-2(lines 24 27) the Hoare annotation is: (and (<= main_~x~0 main_~y~0) (< main_~y~0 (+ main_~n~0 1)) (<= main_~n~0 main_~y~0)) [2021-05-02 13:34:47,083 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 19 30) no Hoare annotation was computed. [2021-05-02 13:34:47,083 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-02 13:34:47,083 INFO L198 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-05-02 13:34:47,083 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-02 13:34:47,083 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2021-05-02 13:34:47,083 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2021-05-02 13:34:47,083 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-05-02 13:34:47,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 01:34:47 BoogieIcfgContainer [2021-05-02 13:34:47,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 13:34:47,094 INFO L168 Benchmark]: Toolchain (without parser) took 2686.68 ms. Allocated memory was 189.8 MB in the beginning and 260.0 MB in the end (delta: 70.3 MB). Free memory was 154.0 MB in the beginning and 214.9 MB in the end (delta: -60.9 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:47,094 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 189.8 MB. Free memory is still 170.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 13:34:47,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.54 ms. Allocated memory is still 189.8 MB. Free memory was 153.8 MB in the beginning and 144.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:47,095 INFO L168 Benchmark]: Boogie Preprocessor took 66.15 ms. Allocated memory is still 189.8 MB. Free memory was 144.3 MB in the beginning and 173.0 MB in the end (delta: -28.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:47,095 INFO L168 Benchmark]: RCFGBuilder took 329.11 ms. Allocated memory is still 189.8 MB. Free memory was 173.0 MB in the beginning and 158.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:47,095 INFO L168 Benchmark]: TraceAbstraction took 2094.46 ms. Allocated memory was 189.8 MB in the beginning and 260.0 MB in the end (delta: 70.3 MB). Free memory was 158.3 MB in the beginning and 214.9 MB in the end (delta: -56.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 13:34:47,096 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 189.8 MB. Free memory is still 170.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 190.54 ms. Allocated memory is still 189.8 MB. Free memory was 153.8 MB in the beginning and 144.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.15 ms. Allocated memory is still 189.8 MB. Free memory was 144.3 MB in the beginning and 173.0 MB in the end (delta: -28.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 329.11 ms. Allocated memory is still 189.8 MB. Free memory was 173.0 MB in the beginning and 158.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2094.46 ms. Allocated memory was 189.8 MB in the beginning and 260.0 MB in the end (delta: 70.3 MB). Free memory was 158.3 MB in the beginning and 214.9 MB in the end (delta: -56.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1940.0ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 6.6ms, AutomataDifference: 593.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 103.9ms, InitialAbstractionConstructionTime: 7.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 40 SDslu, 86 SDs, 0 SdLazy, 159 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 114.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 657.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 61 HoareAnnotationTreeSize, 11 FomulaSimplifications, 163 FormulaSimplificationTreeSizeReduction, 24.5ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 73.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.4ms SsaConstructionTime, 93.5ms SatisfiabilityAnalysisTime, 605.4ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 311 SizeOfPredicates, 4 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 5/10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((x <= y && y <= n) && y <= x) || (x <= y && y + 1 <= n) RESULT: Ultimate proved your program to be correct! Received shutdown request...