/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-invariants/mod4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:30:59,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:30:59,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:30:59,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:30:59,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:30:59,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:30:59,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:30:59,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:30:59,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:30:59,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:30:59,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:30:59,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:30:59,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:30:59,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:30:59,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:30:59,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:30:59,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:30:59,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:30:59,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:30:59,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:30:59,592 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 13:30:59,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:30:59,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:30:59,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:30:59,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:30:59,630 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:30:59,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:30:59,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:30:59,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:30:59,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:30:59,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:30:59,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:30:59,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:30:59,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:30:59,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:30:59,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:30:59,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:30:59,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:30:59,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:30:59,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:30:59,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:30:59,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:30:59,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:30:59,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:30:59,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:30:59,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:30:59,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:30:59,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:30:59,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:30:59,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:30:59,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:30:59,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:30:59,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:30:59,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:30:59,962 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:30:59,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/mod4.c [2021-05-02 13:31:00,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4730b32e8/d3f031ab095047f59e5db252ad901043/FLAG8f912b347 [2021-05-02 13:31:00,454 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:31:00,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4.c [2021-05-02 13:31:00,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4730b32e8/d3f031ab095047f59e5db252ad901043/FLAG8f912b347 [2021-05-02 13:31:00,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4730b32e8/d3f031ab095047f59e5db252ad901043 [2021-05-02 13:31:00,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:31:00,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:31:00,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:31:00,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:31:00,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:31:00,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa800d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00, skipping insertion in model container [2021-05-02 13:31:00,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:31:00,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:31:00,601 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-invariants/mod4.c[351,364] [2021-05-02 13:31:00,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:31:00,616 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:31:00,662 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-invariants/mod4.c[351,364] [2021-05-02 13:31:00,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:31:00,692 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:31:00,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00 WrapperNode [2021-05-02 13:31:00,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:31:00,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:31:00,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:31:00,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:31:00,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (1/1) ... [2021-05-02 13:31:00,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:31:00,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:31:00,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:31:00,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:31:00,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:31:00,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:31:00,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:31:00,801 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:31:00,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:31:00,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:31:00,802 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 13:31:00,802 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:31:00,803 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:31:00,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:31:00,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 13:31:00,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:31:00,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:31:00,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:31:00,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:31:00,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:31:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:31:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:31:00,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:31:01,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:31:01,062 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 13:31:01,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:31:01 BoogieIcfgContainer [2021-05-02 13:31:01,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:31:01,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:31:01,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:31:01,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:31:01,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:31:00" (1/3) ... [2021-05-02 13:31:01,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6353a349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:31:01, skipping insertion in model container [2021-05-02 13:31:01,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:31:00" (2/3) ... [2021-05-02 13:31:01,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6353a349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:31:01, skipping insertion in model container [2021-05-02 13:31:01,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:31:01" (3/3) ... [2021-05-02 13:31:01,070 INFO L111 eAbstractionObserver]: Analyzing ICFG mod4.c [2021-05-02 13:31:01,091 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:31:01,094 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:31:01,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:31:01,145 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:31:01,145 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:31:01,145 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:31:01,145 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:31:01,145 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:31:01,145 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:31:01,145 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:31:01,145 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:31:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 13:31:01,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 13:31:01,167 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:31:01,168 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:31:01,168 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:31:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:31:01,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 1 times [2021-05-02 13:31:01,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:31:01,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784252978] [2021-05-02 13:31:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:31:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:31:01,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:31:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:31:01,411 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 13:31:01,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:31:01,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784252978] [2021-05-02 13:31:01,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784252978] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:31:01,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:31:01,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 13:31:01,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150272462] [2021-05-02 13:31:01,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 13:31:01,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:31:01,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 13:31:01,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 13:31:01,428 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 13:31:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:31:01,469 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-02 13:31:01,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 13:31:01,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2021-05-02 13:31:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:31:01,478 INFO L225 Difference]: With dead ends: 32 [2021-05-02 13:31:01,479 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 13:31:01,483 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 13:31:01,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 13:31:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 13:31:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 13:31:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 13:31:01,517 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 13:31:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:31:01,518 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 13:31:01,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 13:31:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 13:31:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 13:31:01,519 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:31:01,519 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:31:01,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:31:01,519 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:31:01,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:31:01,520 INFO L82 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 1 times [2021-05-02 13:31:01,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:31:01,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974570571] [2021-05-02 13:31:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:31:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:31:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:31:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:31:01,637 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 13:31:01,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:31:01,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974570571] [2021-05-02 13:31:01,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974570571] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:31:01,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:31:01,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 13:31:01,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739996309] [2021-05-02 13:31:01,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 13:31:01,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:31:01,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 13:31:01,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 13:31:01,641 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 13:31:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:31:01,797 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-02 13:31:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 13:31:01,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 13:31:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:31:01,800 INFO L225 Difference]: With dead ends: 20 [2021-05-02 13:31:01,800 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 13:31:01,802 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 13:31:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 13:31:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 13:31:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 13:31:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-02 13:31:01,815 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-05-02 13:31:01,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:31:01,815 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-02 13:31:01,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 13:31:01,815 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-02 13:31:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 13:31:01,816 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:31:01,816 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:31:01,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 13:31:01,816 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:31:01,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:31:01,818 INFO L82 PathProgramCache]: Analyzing trace with hash 615626395, now seen corresponding path program 1 times [2021-05-02 13:31:01,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:31:01,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750920490] [2021-05-02 13:31:01,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:31:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:31:01,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:31:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:31:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:31:01,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:31:01,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750920490] [2021-05-02 13:31:01,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750920490] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:31:01,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575695161] [2021-05-02 13:31:01,966 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 13:31:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:31:02,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 13:31:02,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 13:31:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 13:31:02,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575695161] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 13:31:02,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 13:31:02,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-05-02 13:31:02,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780641354] [2021-05-02 13:31:02,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 13:31:02,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:31:02,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 13:31:02,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 13:31:02,152 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 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 13:31:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:31:02,419 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-05-02 13:31:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 13:31:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 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 13:31:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:31:02,421 INFO L225 Difference]: With dead ends: 18 [2021-05-02 13:31:02,421 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 13:31:02,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 296.6ms TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-05-02 13:31:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 13:31:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 13:31:02,425 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 13:31:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 13:31:02,425 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-02 13:31:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:31:02,425 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 13:31:02,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 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 13:31:02,426 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 13:31:02,426 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 13:31:02,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 13:31:02,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 13:31:02,825 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 13:31:02,825 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 13:31:02,825 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 13:31:02,825 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:31:02,825 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-02 13:31:02,825 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:31:02,826 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:31:02,826 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 13:31:02,826 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 13:31:02,826 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:31:02,826 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2021-05-02 13:31:02,826 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2021-05-02 13:31:02,826 INFO L198 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2021-05-02 13:31:02,826 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2021-05-02 13:31:02,826 INFO L198 CegarLoopUtils]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2021-05-02 13:31:02,827 INFO L194 CegarLoopUtils]: At program point L13-3(lines 13 15) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 4))) (and (<= main_~x~0 (* 4 .cse0)) (< 0 .cse0))) (= main_~x~0 0)) [2021-05-02 13:31:02,827 INFO L194 CegarLoopUtils]: At program point L13-4(lines 13 15) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 4))) (and (<= main_~x~0 (* 4 .cse0)) (< 0 .cse0))) (= main_~x~0 0)) [2021-05-02 13:31:02,827 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-02 13:31:02,827 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-05-02 13:31:02,827 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-05-02 13:31:02,827 INFO L198 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-05-02 13:31:02,827 INFO L198 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-05-02 13:31:02,827 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-05-02 13:31:02,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 01:31:02 BoogieIcfgContainer [2021-05-02 13:31:02,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 13:31:02,839 INFO L168 Benchmark]: Toolchain (without parser) took 2357.09 ms. Allocated memory is still 188.7 MB. Free memory was 153.2 MB in the beginning and 107.0 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.5 MB. Max. memory is 8.0 GB. [2021-05-02 13:31:02,839 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 188.7 MB. Free memory is still 169.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 13:31:02,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.29 ms. Allocated memory is still 188.7 MB. Free memory was 152.9 MB in the beginning and 171.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-02 13:31:02,840 INFO L168 Benchmark]: Boogie Preprocessor took 37.02 ms. Allocated memory is still 188.7 MB. Free memory was 171.4 MB in the beginning and 169.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 13:31:02,841 INFO L168 Benchmark]: RCFGBuilder took 332.26 ms. Allocated memory is still 188.7 MB. Free memory was 169.8 MB in the beginning and 156.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 13:31:02,841 INFO L168 Benchmark]: TraceAbstraction took 1773.59 ms. Allocated memory is still 188.7 MB. Free memory was 156.2 MB in the beginning and 107.0 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. [2021-05-02 13:31:02,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 188.7 MB. Free memory is still 169.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 208.29 ms. Allocated memory is still 188.7 MB. Free memory was 152.9 MB in the beginning and 171.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.02 ms. Allocated memory is still 188.7 MB. Free memory was 171.4 MB in the beginning and 169.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 332.26 ms. Allocated memory is still 188.7 MB. Free memory was 169.8 MB in the beginning and 156.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1773.59 ms. Allocated memory is still 188.7 MB. Free memory was 156.2 MB in the beginning and 107.0 MB in the end (delta: 49.2 MB). Peak memory consumption was 49.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1498.8ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 8.4ms, AutomataDifference: 495.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 182.9ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 31 SDslu, 45 SDs, 0 SdLazy, 68 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 482.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 69 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 47.6ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 298 FormulaSimplificationTreeSizeReductionInter, 128.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 28.0ms SsaConstructionTime, 93.3ms SatisfiabilityAnalysisTime, 459.1ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 1 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 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: 13]: Loop Invariant Derived loop invariant: (x <= 4 * (x / 4) && 0 < x / 4) || x == 0 RESULT: Ultimate proved your program to be correct! Received shutdown request...