/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_FUNCTIONS --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/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:30:51,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:30:51,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:30:51,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:30:51,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:30:51,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:30:51,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:30:51,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:30:51,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:30:51,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:30:51,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:30:51,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:30:51,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:30:51,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:30:51,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:30:51,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:30:51,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:30:51,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:30:51,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:30:51,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:30:51,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:30:51,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:30:51,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:30:51,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:30:51,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:30:51,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:30:51,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:30:51,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:30:51,845 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 14:30:51,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:30:51,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:30:51,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:30:51,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:30:51,863 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:30:51,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:30:51,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:30:51,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:30:51,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:30:51,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:30:51,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:30:51,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:30:51,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:30:51,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:30:51,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:30:51,867 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:30:51,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:30:51,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:30:51,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:30:51,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:30:51,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:30:51,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:30:51,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:30:51,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:30:51,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:30:51,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:30:51,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:51,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:30:51,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:30:51,872 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_FUNCTIONS 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 14:30:52,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:30:52,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:30:52,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:30:52,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:30:52,202 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:30:52,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 14:30:52,294 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5218b62a5/53f62e1d29634ce3a95a044c19100dc6/FLAG243a82897 [2020-07-21 14:30:52,836 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:30:52,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 14:30:52,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5218b62a5/53f62e1d29634ce3a95a044c19100dc6/FLAG243a82897 [2020-07-21 14:30:53,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5218b62a5/53f62e1d29634ce3a95a044c19100dc6 [2020-07-21 14:30:53,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:30:53,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:30:53,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:30:53,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:30:53,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:30:53,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9188d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53, skipping insertion in model container [2020-07-21 14:30:53,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:30:53,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:30:53,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:30:53,477 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:30:53,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:30:53,514 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:30:53,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53 WrapperNode [2020-07-21 14:30:53,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:30:53,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:30:53,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:30:53,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:30:53,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (1/1) ... [2020-07-21 14:30:53,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:30:53,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:30:53,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:30:53,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:30:53,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (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 14:30:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:30:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:30:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:30:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:30:53,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:30:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:30:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:30:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:30:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:30:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 14:30:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:30:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:30:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:30:53,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:30:53,959 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:30:53,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:30:53 BoogieIcfgContainer [2020-07-21 14:30:53,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:30:53,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:30:53,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:30:53,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:30:53,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:30:53" (1/3) ... [2020-07-21 14:30:53,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148ae516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:30:53, skipping insertion in model container [2020-07-21 14:30:53,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:30:53" (2/3) ... [2020-07-21 14:30:53,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148ae516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:30:53, skipping insertion in model container [2020-07-21 14:30:53,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:30:53" (3/3) ... [2020-07-21 14:30:53,973 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-07-21 14:30:53,984 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:30:53,992 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:30:54,006 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:30:54,030 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:30:54,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:30:54,030 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:30:54,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:30:54,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:30:54,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:30:54,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:30:54,031 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:30:54,050 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-21 14:30:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 14:30:54,057 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:54,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:54,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:54,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:54,066 INFO L82 PathProgramCache]: Analyzing trace with hash -12471351, now seen corresponding path program 1 times [2020-07-21 14:30:54,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:54,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468915872] [2020-07-21 14:30:54,075 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 14:30:54,153 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:54,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:54,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 14:30:54,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:54,284 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 14:30:54,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:30:54,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468915872] [2020-07-21 14:30:54,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:30:54,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 14:30:54,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712205221] [2020-07-21 14:30:54,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 14:30:54,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:54,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 14:30:54,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 14:30:54,329 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-21 14:30:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:54,504 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2020-07-21 14:30:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 14:30:54,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 14:30:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:54,517 INFO L225 Difference]: With dead ends: 51 [2020-07-21 14:30:54,518 INFO L226 Difference]: Without dead ends: 19 [2020-07-21 14:30:54,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 14:30:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-21 14:30:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-21 14:30:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 14:30:54,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-21 14:30:54,567 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2020-07-21 14:30:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:54,568 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-21 14:30:54,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 14:30:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-21 14:30:54,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 14:30:54,573 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:54,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:54,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:54,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:54,776 INFO L82 PathProgramCache]: Analyzing trace with hash -793409467, now seen corresponding path program 1 times [2020-07-21 14:30:54,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:54,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99289590] [2020-07-21 14:30:54,777 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 14:30:54,821 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:54,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:54,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 14:30:54,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:30:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:55,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:30:55,167 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:30:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:30:55,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99289590] [2020-07-21 14:30:55,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:30:55,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 14:30:55,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904062298] [2020-07-21 14:30:55,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 14:30:55,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:30:55,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 14:30:55,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-21 14:30:55,472 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 14 states. [2020-07-21 14:31:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:31:00,057 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-07-21 14:31:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 14:31:00,059 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 14:31:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:31:00,060 INFO L225 Difference]: With dead ends: 40 [2020-07-21 14:31:00,061 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 14:31:00,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-21 14:31:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 14:31:00,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 14:31:00,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 14:31:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-21 14:31:00,070 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2020-07-21 14:31:00,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:31:00,070 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-21 14:31:00,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 14:31:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-21 14:31:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 14:31:00,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:31:00,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:31:00,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:31:00,277 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:31:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:31:00,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1087804450, now seen corresponding path program 1 times [2020-07-21 14:31:00,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:31:00,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834283295] [2020-07-21 14:31:00,278 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 14:31:00,322 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:31:00,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:31:00,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 14:31:00,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:31:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:31:00,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:31:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:31:00,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834283295] [2020-07-21 14:31:00,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:31:00,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 14:31:00,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356941307] [2020-07-21 14:31:00,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 14:31:00,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:31:00,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 14:31:00,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-21 14:31:00,423 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2020-07-21 14:31:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:31:00,718 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2020-07-21 14:31:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 14:31:00,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 14:31:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:31:00,722 INFO L225 Difference]: With dead ends: 60 [2020-07-21 14:31:00,722 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 14:31:00,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-21 14:31:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 14:31:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-07-21 14:31:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 14:31:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-07-21 14:31:00,734 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 23 [2020-07-21 14:31:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:31:00,735 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-07-21 14:31:00,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 14:31:00,735 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-07-21 14:31:00,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 14:31:00,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:31:00,736 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:31:00,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:31:00,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:31:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:31:00,942 INFO L82 PathProgramCache]: Analyzing trace with hash -563580765, now seen corresponding path program 1 times [2020-07-21 14:31:00,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:31:00,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434607646] [2020-07-21 14:31:00,944 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:31:01,036 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:31:01,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:31:01,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 14:31:01,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:31:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:31:01,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:31:01,267 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:31:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 1 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 14:31:04,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434607646] [2020-07-21 14:31:04,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:31:04,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2020-07-21 14:31:04,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408573792] [2020-07-21 14:31:04,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 14:31:04,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:31:04,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 14:31:04,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2020-07-21 14:31:04,382 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 14 states. [2020-07-21 14:31:06,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:31:06,700 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2020-07-21 14:31:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 14:31:06,702 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-07-21 14:31:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:31:06,703 INFO L225 Difference]: With dead ends: 65 [2020-07-21 14:31:06,703 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 14:31:06,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2020-07-21 14:31:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 14:31:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 14:31:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 14:31:06,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 14:31:06,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-07-21 14:31:06,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:31:06,706 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 14:31:06,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 14:31:06,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 14:31:06,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 14:31:06,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:31:06,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 14:31:07,168 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:31:07,168 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:31:07,169 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:31:07,169 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 14:31:07,169 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 14:31:07,169 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 14:31:07,169 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 14:31:07,169 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:31:07,169 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 14:31:07,170 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:31:07,170 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 14:31:07,170 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 14:31:07,170 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-07-21 14:31:07,170 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 33) no Hoare annotation was computed. [2020-07-21 14:31:07,170 INFO L268 CegarLoopResult]: For program point L23(lines 23 28) no Hoare annotation was computed. [2020-07-21 14:31:07,170 INFO L268 CegarLoopResult]: For program point L25-2(lines 21 28) no Hoare annotation was computed. [2020-07-21 14:31:07,170 INFO L268 CegarLoopResult]: For program point L21(lines 21 28) no Hoare annotation was computed. [2020-07-21 14:31:07,171 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 30) the Hoare annotation is: (= (mod (+ main_~l~0 1) 4294967296) (mod (+ main_~v4~0 main_~i~0 main_~j~0 main_~k~0 1) 4294967296)) [2020-07-21 14:31:07,171 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 30) the Hoare annotation is: (= (mod (+ main_~v4~0 main_~i~0 main_~j~0 main_~k~0 1) 4294967296) (mod (+ main_~l~0 1) 4294967296)) [2020-07-21 14:31:07,171 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 33) no Hoare annotation was computed. [2020-07-21 14:31:07,171 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 33) the Hoare annotation is: true [2020-07-21 14:31:07,171 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-21 14:31:07,172 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 14:31:07,172 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 14:31:07,172 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 14:31:07,172 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 14:31:07,172 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 14:31:07,172 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 14:31:07,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:31:07 BoogieIcfgContainer [2020-07-21 14:31:07,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 14:31:07,194 INFO L168 Benchmark]: Toolchain (without parser) took 13978.50 ms. Allocated memory was 144.2 MB in the beginning and 248.5 MB in the end (delta: 104.3 MB). Free memory was 101.8 MB in the beginning and 207.6 MB in the end (delta: -105.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 14:31:07,195 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 14:31:07,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.43 ms. Allocated memory is still 144.2 MB. Free memory was 101.4 MB in the beginning and 91.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:07,197 INFO L168 Benchmark]: Boogie Preprocessor took 121.65 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.7 MB in the beginning and 181.9 MB in the end (delta: -90.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:07,198 INFO L168 Benchmark]: RCFGBuilder took 326.25 ms. Allocated memory is still 201.9 MB. Free memory was 181.9 MB in the beginning and 167.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:07,199 INFO L168 Benchmark]: TraceAbstraction took 13226.59 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 166.6 MB in the beginning and 207.6 MB in the end (delta: -41.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-07-21 14:31:07,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.43 ms. Allocated memory is still 144.2 MB. Free memory was 101.4 MB in the beginning and 91.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.65 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.7 MB in the beginning and 181.9 MB in the end (delta: -90.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 326.25 ms. Allocated memory is still 201.9 MB. Free memory was 181.9 MB in the beginning and 167.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13226.59 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 166.6 MB in the beginning and 207.6 MB in the end (delta: -41.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 19]: Loop Invariant Derived loop invariant: (l + 1) % 4294967296 == (v4 + i + j + k + 1) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 65 SDslu, 228 SDs, 0 SdLazy, 381 SolverSat, 31 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 93 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=3, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 28 NumberOfFragments, 33 HoareAnnotationTreeSize, 15 FomulaSimplifications, 69 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 166 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 131 ConstructedInterpolants, 2 QuantifiedInterpolants, 18800 SizeOfPredicates, 9 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 23/54 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...