/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:29:36,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:29:36,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:29:36,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:29:36,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:29:36,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:29:36,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:29:36,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:29:36,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:29:36,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:29:36,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:29:36,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:29:36,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:29:36,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:29:36,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:29:36,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:29:36,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:29:36,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:29:36,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:29:36,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:29:36,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:29:36,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:29:36,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:29:36,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:29:36,254 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:29:36,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:29:36,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:29:36,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:29:36,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:29:36,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:29:36,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:29:36,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:29:36,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:29:36,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:29:36,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:29:36,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:29:36,256 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:29:36,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:29:36,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:29:36,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:29:36,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:29:36,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:29:36,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:29:36,257 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:29:36,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:29:36,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:29:36,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:29:36,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:29:36,675 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:29:36,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1.i [2021-02-21 21:29:36,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8701a977/035d12e3bc004825ac5e7752df1c482f/FLAG0f096c2fd [2021-02-21 21:29:37,433 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:29:37,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1.i [2021-02-21 21:29:37,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8701a977/035d12e3bc004825ac5e7752df1c482f/FLAG0f096c2fd [2021-02-21 21:29:37,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8701a977/035d12e3bc004825ac5e7752df1c482f [2021-02-21 21:29:37,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:29:37,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:29:37,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:37,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:29:37,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:29:37,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:37" (1/1) ... [2021-02-21 21:29:37,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10291176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:37, skipping insertion in model container [2021-02-21 21:29:37,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:29:37" (1/1) ... [2021-02-21 21:29:37,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:29:37,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:29:38,025 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1.i[891,904] [2021-02-21 21:29:38,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:38,049 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:29:38,065 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1.i[891,904] [2021-02-21 21:29:38,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:29:38,085 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:29:38,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38 WrapperNode [2021-02-21 21:29:38,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:29:38,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:29:38,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:29:38,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:29:38,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (1/1) ... [2021-02-21 21:29:38,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (1/1) ... [2021-02-21 21:29:38,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (1/1) ... [2021-02-21 21:29:38,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (1/1) ... [2021-02-21 21:29:38,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (1/1) ... [2021-02-21 21:29:38,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (1/1) ... [2021-02-21 21:29:38,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (1/1) ... [2021-02-21 21:29:38,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:29:38,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:29:38,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:29:38,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:29:38,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (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 [2021-02-21 21:29:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:29:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:29:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:29:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:29:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:29:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:29:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:29:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:29:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 21:29:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 21:29:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:29:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:29:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:29:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:29:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:29:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:29:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:29:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:29:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:29:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:29:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:29:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:29:38,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:29:38,620 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:29:38,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:38 BoogieIcfgContainer [2021-02-21 21:29:38,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:29:38,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:29:38,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:29:38,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:29:38,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:29:37" (1/3) ... [2021-02-21 21:29:38,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b2299b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:38, skipping insertion in model container [2021-02-21 21:29:38,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:29:38" (2/3) ... [2021-02-21 21:29:38,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b2299b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:29:38, skipping insertion in model container [2021-02-21 21:29:38,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:29:38" (3/3) ... [2021-02-21 21:29:38,633 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2021-02-21 21:29:38,641 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:29:38,645 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:29:38,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:29:38,697 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:29:38,697 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:29:38,697 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:29:38,698 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:29:38,698 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:29:38,698 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:29:38,698 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:29:38,698 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:29:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2021-02-21 21:29:38,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-21 21:29:38,729 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:38,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:38,730 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:38,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:38,744 INFO L82 PathProgramCache]: Analyzing trace with hash -80870189, now seen corresponding path program 1 times [2021-02-21 21:29:38,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:38,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026707557] [2021-02-21 21:29:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:38,861 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:39,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:39,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:39,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:39,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:39,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:39,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:39,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026707557] [2021-02-21 21:29:39,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:39,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:29:39,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553294627] [2021-02-21 21:29:39,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:29:39,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:39,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:29:39,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:29:39,262 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2021-02-21 21:29:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:39,403 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-02-21 21:29:39,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:29:39,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-02-21 21:29:39,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:39,414 INFO L225 Difference]: With dead ends: 42 [2021-02-21 21:29:39,415 INFO L226 Difference]: Without dead ends: 22 [2021-02-21 21:29:39,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:29:39,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-02-21 21:29:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-02-21 21:29:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-02-21 21:29:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-02-21 21:29:39,467 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2021-02-21 21:29:39,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:39,468 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-02-21 21:29:39,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:29:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-02-21 21:29:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-21 21:29:39,469 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:39,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:39,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:29:39,470 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:39,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash -88258357, now seen corresponding path program 1 times [2021-02-21 21:29:39,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:39,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051461417] [2021-02-21 21:29:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:39,474 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:29:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:39,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:39,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:39,546 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:39,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:29:39,562 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-21 21:29:39,564 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-21 21:29:39,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:39,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:39,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:39,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:39,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051461417] [2021-02-21 21:29:39,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:39,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:29:39,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891788207] [2021-02-21 21:29:39,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:29:39,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:39,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:29:39,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:29:39,639 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2021-02-21 21:29:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:39,777 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-02-21 21:29:39,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 21:29:39,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2021-02-21 21:29:39,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:39,781 INFO L225 Difference]: With dead ends: 30 [2021-02-21 21:29:39,781 INFO L226 Difference]: Without dead ends: 25 [2021-02-21 21:29:39,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:29:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-02-21 21:29:39,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-02-21 21:29:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-21 21:29:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-02-21 21:29:39,816 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2021-02-21 21:29:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:39,820 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-02-21 21:29:39,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:29:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-02-21 21:29:39,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 21:29:39,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:29:39,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:29:39,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:29:39,822 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:29:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:29:39,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1879101960, now seen corresponding path program 1 times [2021-02-21 21:29:39,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:29:39,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277271010] [2021-02-21 21:29:39,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:29:42,026 WARN L141 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size [2021-02-21 21:29:42,075 WARN L147 QuantifierPusher]: treesize reduction 23, result has 66.7 percent of original size 46 [2021-02-21 21:29:42,077 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-21 21:29:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:42,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:42,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:29:42,215 WARN L141 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-02-21 21:29:42,216 WARN L147 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size 3 [2021-02-21 21:29:42,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:29:42,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:42,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:29:42,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:29:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:29:42,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:29:42,327 WARN L141 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size [2021-02-21 21:29:42,330 WARN L147 QuantifierPusher]: treesize reduction 3, result has 91.9 percent of original size 34 [2021-02-21 21:29:42,367 WARN L141 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size [2021-02-21 21:29:42,369 WARN L147 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size 18 [2021-02-21 21:29:42,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 21:29:42,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 21:29:42,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 21:29:42,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:29:42,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:29:42,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277271010] [2021-02-21 21:29:42,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:29:42,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:29:42,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623369865] [2021-02-21 21:29:42,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:29:42,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:29:42,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:29:42,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-02-21 21:29:42,479 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 11 states. [2021-02-21 21:29:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:29:42,985 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-02-21 21:29:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:29:42,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2021-02-21 21:29:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:29:42,987 INFO L225 Difference]: With dead ends: 25 [2021-02-21 21:29:42,987 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:29:42,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-02-21 21:29:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:29:42,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:29:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:29:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:29:42,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-02-21 21:29:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:29:42,994 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:29:42,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:29:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:29:42,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:29:42,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:29:42,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:29:43,381 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 21:29:43,382 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 21:29:43,382 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 21:29:43,382 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-21 21:29:43,382 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-21 21:29:43,382 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:43,383 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:43,383 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-21 21:29:43,383 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-21 21:29:43,383 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-21 21:29:43,383 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-21 21:29:43,383 INFO L185 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)|)) [2021-02-21 21:29:43,384 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-21 21:29:43,384 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:29:43,384 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:29:43,384 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:29:43,385 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:29:43,385 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:29:43,385 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-21 21:29:43,385 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-21 21:29:43,385 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:43,386 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:43,386 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-21 21:29:43,386 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 29) the Hoare annotation is: true [2021-02-21 21:29:43,386 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-21 21:29:43,386 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 21:29:43,387 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 29) the Hoare annotation is: true [2021-02-21 21:29:43,387 INFO L185 CegarLoopUtils]: At program point L26-3(line 26) the Hoare annotation is: (or (and (< main_~i~0 1000000) (or (<= 2 main_~i~0) (= main_~i~0 1))) (= main_~i~0 0)) [2021-02-21 21:29:43,387 INFO L185 CegarLoopUtils]: At program point L26-4(line 26) the Hoare annotation is: (and (or (= main_~i~0 0) (<= 1 main_~i~0)) (= |main_#t~post3| main_~i~0) (< main_~i~0 1000000)) [2021-02-21 21:29:43,387 INFO L185 CegarLoopUtils]: At program point L26-5(line 26) the Hoare annotation is: (and (or (= |main_#t~post3| 0) (<= 1 |main_#t~post3|)) (= (+ |main_#t~post3| 1) main_~i~0) (< |main_#t~post3| 1000000)) [2021-02-21 21:29:43,388 INFO L185 CegarLoopUtils]: At program point L26-6(line 26) the Hoare annotation is: (or (and (< main_~i~0 1000001) (or (<= 2 main_~i~0) (= main_~i~0 1))) (= main_~i~0 0)) [2021-02-21 21:29:43,388 INFO L185 CegarLoopUtils]: At program point L26-7(line 26) the Hoare annotation is: (= main_~i~0 1000000) [2021-02-21 21:29:43,388 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 29) the Hoare annotation is: true [2021-02-21 21:29:43,388 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:43,388 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:43,389 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-21 21:29:43,389 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:43,389 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:43,389 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:29:43,390 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:29:43,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:29:43 BoogieIcfgContainer [2021-02-21 21:29:43,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:29:43,415 INFO L168 Benchmark]: Toolchain (without parser) took 5594.17 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.1 MB in the beginning and 90.2 MB in the end (delta: 39.0 MB). Peak memory consumption was 71.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:43,416 INFO L168 Benchmark]: CDTParser took 1.36 ms. Allocated memory is still 153.1 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:29:43,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.51 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:43,423 INFO L168 Benchmark]: Boogie Preprocessor took 38.36 ms. Allocated memory is still 153.1 MB. Free memory was 118.2 MB in the beginning and 116.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:43,424 INFO L168 Benchmark]: RCFGBuilder took 496.40 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 102.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:43,427 INFO L168 Benchmark]: TraceAbstraction took 4788.49 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 102.2 MB in the beginning and 90.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:29:43,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36 ms. Allocated memory is still 153.1 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.51 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.36 ms. Allocated memory is still 153.1 MB. Free memory was 118.2 MB in the beginning and 116.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 496.40 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 102.5 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4788.49 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 102.2 MB in the beginning and 90.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 44.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (i < 1000001 && (2 <= i || i == 1)) || i == 0 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 47 SDslu, 69 SDs, 0 SdLazy, 88 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 44 PreInvPairs, 57 NumberOfFragments, 125 HoareAnnotationTreeSize, 44 FomulaSimplifications, 223 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 30 FomulaSimplificationsInter, 457 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...