/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-acceleration/simple_3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:18:49,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:18:49,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:18:49,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:18:49,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:18:49,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:18:49,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:18:49,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:18:49,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:18:49,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:18:49,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:18:49,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:18:49,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:18:49,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:18:49,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:18:49,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:18:49,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:18:49,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:18:49,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:18:49,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:18:49,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:18:49,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:18:49,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:18:49,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:18:49,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:18:49,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:18:49,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:18:49,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:18:49,942 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 21:18:49,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:18:49,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:18:49,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:18:49,969 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:18:49,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:18:49,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:18:49,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:18:49,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:18:49,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:18:49,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:18:49,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:18:49,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:18:49,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:18:49,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:18:49,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:18:49,973 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:18:49,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:18:49,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:18:49,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:18:49,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:18:49,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:18:49,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:18:49,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:18:50,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:18:50,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:18:50,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:18:50,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:18:50,421 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:18:50,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2021-02-21 21:18:50,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ef5ab08/ec5b9494baf44b0b9b4c0f9d7b72e626/FLAGbf02e5eb7 [2021-02-21 21:18:51,022 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:18:51,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2021-02-21 21:18:51,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ef5ab08/ec5b9494baf44b0b9b4c0f9d7b72e626/FLAGbf02e5eb7 [2021-02-21 21:18:51,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ef5ab08/ec5b9494baf44b0b9b4c0f9d7b72e626 [2021-02-21 21:18:51,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:18:51,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:18:51,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:18:51,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:18:51,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:18:51,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72972bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51, skipping insertion in model container [2021-02-21 21:18:51,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:18:51,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:18:51,601 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-acceleration/simple_3-2.c[376,389] [2021-02-21 21:18:51,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:18:51,640 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:18:51,655 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-acceleration/simple_3-2.c[376,389] [2021-02-21 21:18:51,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:18:51,677 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:18:51,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51 WrapperNode [2021-02-21 21:18:51,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:18:51,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:18:51,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:18:51,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:18:51,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (1/1) ... [2021-02-21 21:18:51,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:18:51,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:18:51,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:18:51,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:18:51,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (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 21:18:51,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:18:51,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:18:51,870 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:18:51,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:18:51,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:18:51,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:18:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:18:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:18:51,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:18:51,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2021-02-21 21:18:51,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:18:51,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:18:51,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:18:51,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:18:51,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:18:51,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:18:51,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:18:51,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:18:52,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:18:52,252 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:18:52,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:18:52 BoogieIcfgContainer [2021-02-21 21:18:52,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:18:52,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:18:52,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:18:52,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:18:52,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:18:51" (1/3) ... [2021-02-21 21:18:52,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f35f389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:18:52, skipping insertion in model container [2021-02-21 21:18:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:51" (2/3) ... [2021-02-21 21:18:52,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f35f389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:18:52, skipping insertion in model container [2021-02-21 21:18:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:18:52" (3/3) ... [2021-02-21 21:18:52,284 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2021-02-21 21:18:52,299 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:18:52,309 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:18:52,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:18:52,420 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:18:52,421 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:18:52,421 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:18:52,421 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:18:52,421 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:18:52,421 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:18:52,422 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:18:52,422 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:18:52,447 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-02-21 21:18:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 21:18:52,460 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:18:52,461 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] [2021-02-21 21:18:52,462 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:18:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:18:52,473 INFO L82 PathProgramCache]: Analyzing trace with hash -108989713, now seen corresponding path program 1 times [2021-02-21 21:18:52,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:18:52,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388150431] [2021-02-21 21:18:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:18:52,583 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:18:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:52,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:52,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:52,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:52,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:52,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:18:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:52,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:52,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:52,943 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 21:18:52,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388150431] [2021-02-21 21:18:52,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:18:52,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:18:52,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348755591] [2021-02-21 21:18:52,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:18:52,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:18:52,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:18:52,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:18:52,977 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2021-02-21 21:18:53,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:18:53,100 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-02-21 21:18:53,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:18:53,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-02-21 21:18:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:18:53,109 INFO L225 Difference]: With dead ends: 40 [2021-02-21 21:18:53,109 INFO L226 Difference]: Without dead ends: 22 [2021-02-21 21:18:53,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:18:53,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-02-21 21:18:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-02-21 21:18:53,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-02-21 21:18:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-02-21 21:18:53,153 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2021-02-21 21:18:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:18:53,154 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-02-21 21:18:53,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:18:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-02-21 21:18:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 21:18:53,155 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:18:53,155 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] [2021-02-21 21:18:53,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:18:53,156 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:18:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:18:53,157 INFO L82 PathProgramCache]: Analyzing trace with hash -113607318, now seen corresponding path program 1 times [2021-02-21 21:18:53,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:18:53,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442744809] [2021-02-21 21:18:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:18:53,160 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:18:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:53,227 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,228 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:53,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:18:53,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:18:53,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:18:53,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:18:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:53,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:53,287 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 21:18:53,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442744809] [2021-02-21 21:18:53,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:18:53,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:18:53,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769631554] [2021-02-21 21:18:53,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:18:53,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:18:53,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:18:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:18:53,290 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2021-02-21 21:18:53,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:18:53,454 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-02-21 21:18:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:18:53,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-02-21 21:18:53,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:18:53,456 INFO L225 Difference]: With dead ends: 29 [2021-02-21 21:18:53,457 INFO L226 Difference]: Without dead ends: 24 [2021-02-21 21:18:53,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:18:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-02-21 21:18:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-02-21 21:18:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-21 21:18:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-02-21 21:18:53,468 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2021-02-21 21:18:53,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:18:53,469 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-02-21 21:18:53,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:18:53,469 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-02-21 21:18:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 21:18:53,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:18:53,470 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 21:18:53,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:18:53,471 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:18:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:18:53,471 INFO L82 PathProgramCache]: Analyzing trace with hash -905446871, now seen corresponding path program 1 times [2021-02-21 21:18:53,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:18:53,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512232686] [2021-02-21 21:18:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:18:53,870 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2021-02-21 21:18:53,887 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:18:53,889 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:18:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:53,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:53,944 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:18:53,957 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-21 21:18:53,958 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-21 21:18:53,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:18:53,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:18:53,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:53,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:54,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:18:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:54,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:54,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:54,029 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 21:18:54,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512232686] [2021-02-21 21:18:54,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:18:54,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:18:54,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221214966] [2021-02-21 21:18:54,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:18:54,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:18:54,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:18:54,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:18:54,032 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2021-02-21 21:18:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:18:54,207 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-02-21 21:18:54,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 21:18:54,208 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-02-21 21:18:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:18:54,209 INFO L225 Difference]: With dead ends: 24 [2021-02-21 21:18:54,209 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:18:54,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:18:54,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:18:54,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:18:54,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:18:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:18:54,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-02-21 21:18:54,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:18:54,213 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:18:54,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:18:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:18:54,213 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:18:54,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:18:54,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:18:54,564 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 21:18:54,564 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 21:18:54,564 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 21:18:54,565 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 21:18:54,565 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 21:18:54,565 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:18:54,565 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 21:18:54,565 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:18:54,565 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-21 21:18:54,566 INFO L185 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|)) [2021-02-21 21:18:54,568 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 21:18:54,568 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 21:18:54,568 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:18:54,568 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:18:54,568 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:18:54,569 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:18:54,569 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:18:54,569 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2021-02-21 21:18:54,569 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 13 22) the Hoare annotation is: true [2021-02-21 21:18:54,569 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-21 21:18:54,569 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:18:54,570 INFO L185 CegarLoopUtils]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-21 21:18:54,570 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:18:54,570 INFO L185 CegarLoopUtils]: At program point L17-3(lines 17 19) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-21 21:18:54,570 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 13 22) the Hoare annotation is: true [2021-02-21 21:18:54,570 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2021-02-21 21:18:54,570 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2021-02-21 21:18:54,571 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:18:54,571 INFO L185 CegarLoopUtils]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:18:54,571 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:18:54,571 INFO L192 CegarLoopUtils]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2021-02-21 21:18:54,571 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:18:54,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:18:54 BoogieIcfgContainer [2021-02-21 21:18:54,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:18:54,592 INFO L168 Benchmark]: Toolchain (without parser) took 3186.48 ms. Allocated memory was 157.3 MB in the beginning and 195.0 MB in the end (delta: 37.7 MB). Free memory was 134.7 MB in the beginning and 129.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 106.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:54,595 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:18:54,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.17 ms. Allocated memory is still 157.3 MB. Free memory was 133.5 MB in the beginning and 124.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:54,602 INFO L168 Benchmark]: Boogie Preprocessor took 59.78 ms. Allocated memory is still 157.3 MB. Free memory was 124.2 MB in the beginning and 122.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:54,603 INFO L168 Benchmark]: RCFGBuilder took 516.99 ms. Allocated memory is still 157.3 MB. Free memory was 122.8 MB in the beginning and 109.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:54,605 INFO L168 Benchmark]: TraceAbstraction took 2326.88 ms. Allocated memory was 157.3 MB in the beginning and 195.0 MB in the end (delta: 37.7 MB). Free memory was 109.4 MB in the beginning and 129.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 81.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:54,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 129.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.17 ms. Allocated memory is still 157.3 MB. Free memory was 133.5 MB in the beginning and 124.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.78 ms. Allocated memory is still 157.3 MB. Free memory was 124.2 MB in the beginning and 122.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 516.99 ms. Allocated memory is still 157.3 MB. Free memory was 122.8 MB in the beginning and 109.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2326.88 ms. Allocated memory was 157.3 MB in the beginning and 195.0 MB in the end (delta: 37.7 MB). Free memory was 109.4 MB in the beginning and 129.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 81.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 17]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2)) || x == 0 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 35 SDslu, 99 SDs, 0 SdLazy, 84 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 43 PreInvPairs, 55 NumberOfFragments, 124 HoareAnnotationTreeSize, 43 FomulaSimplifications, 132 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 29 FomulaSimplificationsInter, 476 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...