/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 17:20:24,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 17:20:24,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 17:20:24,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 17:20:24,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 17:20:24,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 17:20:24,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 17:20:24,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 17:20:24,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 17:20:24,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 17:20:24,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 17:20:24,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 17:20:24,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 17:20:24,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 17:20:24,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 17:20:24,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 17:20:24,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 17:20:24,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 17:20:24,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 17:20:24,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 17:20:24,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 17:20:24,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 17:20:24,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 17:20:24,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 17:20:24,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 17:20:24,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 17:20:24,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 17:20:24,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 17:20:24,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 17:20:24,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 17:20:24,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 17:20:24,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 17:20:24,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 17:20:24,084 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 17:20:24,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 17:20:24,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 17:20:24,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 17:20:24,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 17:20:24,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 17:20:24,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 17:20:24,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 17:20:24,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 17:20:24,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 17:20:24,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 17:20:24,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 17:20:24,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 17:20:24,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 17:20:24,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 17:20:24,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 17:20:24,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 17:20:24,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 17:20:24,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 17:20:24,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 17:20:24,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 17:20:24,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 17:20:24,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:24,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 17:20:24,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 17:20:24,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 17:20:24,471 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 17:20:24,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 17:20:24,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 17:20:24,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 17:20:24,490 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 17:20:24,491 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps2.c [2020-07-21 17:20:24,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0443b9121/b4ef87033ecb4041bd5b861626dc3917/FLAG370cf8af8 [2020-07-21 17:20:24,991 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 17:20:24,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps2.c [2020-07-21 17:20:24,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0443b9121/b4ef87033ecb4041bd5b861626dc3917/FLAG370cf8af8 [2020-07-21 17:20:25,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0443b9121/b4ef87033ecb4041bd5b861626dc3917 [2020-07-21 17:20:25,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 17:20:25,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 17:20:25,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 17:20:25,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 17:20:25,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 17:20:25,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c612bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25, skipping insertion in model container [2020-07-21 17:20:25,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 17:20:25,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 17:20:25,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:20:25,628 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 17:20:25,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:20:25,661 INFO L208 MainTranslator]: Completed translation [2020-07-21 17:20:25,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25 WrapperNode [2020-07-21 17:20:25,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 17:20:25,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 17:20:25,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 17:20:25,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 17:20:25,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (1/1) ... [2020-07-21 17:20:25,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 17:20:25,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 17:20:25,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 17:20:25,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 17:20:25,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 17:20:25,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 17:20:25,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 17:20:25,850 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 17:20:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 17:20:25,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 17:20:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 17:20:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 17:20:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 17:20:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 17:20:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 17:20:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 17:20:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 17:20:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 17:20:26,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 17:20:26,050 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 17:20:26,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:20:26 BoogieIcfgContainer [2020-07-21 17:20:26,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 17:20:26,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 17:20:26,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 17:20:26,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 17:20:26,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:20:25" (1/3) ... [2020-07-21 17:20:26,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656f2cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:20:26, skipping insertion in model container [2020-07-21 17:20:26,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:25" (2/3) ... [2020-07-21 17:20:26,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656f2cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:20:26, skipping insertion in model container [2020-07-21 17:20:26,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:20:26" (3/3) ... [2020-07-21 17:20:26,063 INFO L109 eAbstractionObserver]: Analyzing ICFG ps2.c [2020-07-21 17:20:26,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 17:20:26,085 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 17:20:26,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 17:20:26,119 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 17:20:26,120 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 17:20:26,120 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 17:20:26,120 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 17:20:26,120 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 17:20:26,120 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 17:20:26,120 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 17:20:26,121 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 17:20:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-21 17:20:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 17:20:26,146 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:20:26,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:20:26,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:20:26,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:20:26,154 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-21 17:20:26,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:20:26,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982996785] [2020-07-21 17:20:26,162 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:26,232 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:20:26,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:20:26,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 17:20:26,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:20:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:20:26,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:20:26,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982996785] [2020-07-21 17:20:26,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:20:26,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 17:20:26,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163462444] [2020-07-21 17:20:26,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 17:20:26,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:20:26,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 17:20:26,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 17:20:26,325 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-21 17:20:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:20:26,352 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-21 17:20:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 17:20:26,354 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 17:20:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:20:26,366 INFO L225 Difference]: With dead ends: 35 [2020-07-21 17:20:26,366 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 17:20:26,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 17:20:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 17:20:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 17:20:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 17:20:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-21 17:20:26,405 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-21 17:20:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:20:26,406 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-21 17:20:26,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 17:20:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-21 17:20:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 17:20:26,406 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:20:26,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:20:26,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:26,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:20:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:20:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-21 17:20:26,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:20:26,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629870123] [2020-07-21 17:20:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:26,640 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:20:26,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:20:26,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 17:20:26,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:20:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:20:26,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:20:26,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629870123] [2020-07-21 17:20:26,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:20:26,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 17:20:26,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022043699] [2020-07-21 17:20:26,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 17:20:26,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:20:26,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 17:20:26,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 17:20:26,726 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-21 17:20:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:20:26,794 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-21 17:20:26,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 17:20:26,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-21 17:20:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:20:26,797 INFO L225 Difference]: With dead ends: 25 [2020-07-21 17:20:26,797 INFO L226 Difference]: Without dead ends: 22 [2020-07-21 17:20:26,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 17:20:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-21 17:20:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-21 17:20:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-21 17:20:26,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-21 17:20:26,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-21 17:20:26,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:20:26,807 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-21 17:20:26,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 17:20:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-21 17:20:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 17:20:26,809 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:20:26,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:20:27,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:27,024 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:20:27,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:20:27,025 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-21 17:20:27,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:20:27,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639889326] [2020-07-21 17:20:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:27,061 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:20:27,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:20:27,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 17:20:27,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:20:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:20:27,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:20:27,184 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:20:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 17:20:27,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639889326] [2020-07-21 17:20:27,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 17:20:27,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-07-21 17:20:27,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274173044] [2020-07-21 17:20:27,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 17:20:27,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:20:27,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 17:20:27,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 17:20:27,265 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2020-07-21 17:20:27,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:20:27,317 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-07-21 17:20:27,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 17:20:27,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 17:20:27,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:20:27,319 INFO L225 Difference]: With dead ends: 22 [2020-07-21 17:20:27,319 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 17:20:27,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 17:20:27,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 17:20:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 17:20:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 17:20:27,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 17:20:27,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-07-21 17:20:27,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:20:27,323 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 17:20:27,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 17:20:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 17:20:27,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 17:20:27,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:27,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 17:20:27,607 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 17:20:27,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:20:27,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:20:27,607 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 17:20:27,607 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:20:27,607 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:20:27,608 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-21 17:20:27,608 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 17:20:27,608 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-21 17:20:27,608 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 17:20:27,608 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-07-21 17:20:27,609 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 15 36) the Hoare annotation is: true [2020-07-21 17:20:27,609 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 36) no Hoare annotation was computed. [2020-07-21 17:20:27,609 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2020-07-21 17:20:27,609 INFO L268 CegarLoopResult]: For program point L24-1(lines 23 32) no Hoare annotation was computed. [2020-07-21 17:20:27,610 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 32) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2020-07-21 17:20:27,610 INFO L264 CegarLoopResult]: At program point L23-3(lines 23 32) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2020-07-21 17:20:27,610 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 36) no Hoare annotation was computed. [2020-07-21 17:20:27,610 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 13) the Hoare annotation is: true [2020-07-21 17:20:27,610 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 13) no Hoare annotation was computed. [2020-07-21 17:20:27,611 INFO L268 CegarLoopResult]: For program point L9(lines 9 10) no Hoare annotation was computed. [2020-07-21 17:20:27,611 INFO L268 CegarLoopResult]: For program point L8(lines 8 11) no Hoare annotation was computed. [2020-07-21 17:20:27,611 INFO L268 CegarLoopResult]: For program point L8-2(lines 7 13) no Hoare annotation was computed. [2020-07-21 17:20:27,611 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-21 17:20:27,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:20:27 BoogieIcfgContainer [2020-07-21 17:20:27,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 17:20:27,633 INFO L168 Benchmark]: Toolchain (without parser) took 2220.50 ms. Allocated memory was 145.8 MB in the beginning and 199.2 MB in the end (delta: 53.5 MB). Free memory was 103.3 MB in the beginning and 103.4 MB in the end (delta: -94.6 kB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-07-21 17:20:27,634 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 17:20:27,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.02 ms. Allocated memory is still 145.8 MB. Free memory was 102.9 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-21 17:20:27,636 INFO L168 Benchmark]: Boogie Preprocessor took 120.57 ms. Allocated memory was 145.8 MB in the beginning and 199.2 MB in the end (delta: 53.5 MB). Free memory was 93.4 MB in the beginning and 179.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-21 17:20:27,637 INFO L168 Benchmark]: RCFGBuilder took 268.93 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 165.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-07-21 17:20:27,638 INFO L168 Benchmark]: TraceAbstraction took 1573.78 ms. Allocated memory is still 199.2 MB. Free memory was 165.2 MB in the beginning and 103.4 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2020-07-21 17:20:27,642 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.02 ms. Allocated memory is still 145.8 MB. Free memory was 102.9 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.57 ms. Allocated memory was 145.8 MB in the beginning and 199.2 MB in the end (delta: 53.5 MB). Free memory was 93.4 MB in the beginning and 179.2 MB in the end (delta: -85.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 268.93 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 165.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1573.78 ms. Allocated memory is still 199.2 MB. Free memory was 165.2 MB in the beginning and 103.4 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x * 2 == y + y * y - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 12 SDslu, 59 SDs, 0 SdLazy, 27 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 32 HoareAnnotationTreeSize, 13 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2066 SizeOfPredicates, 4 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...