/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/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 17:13:54,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 17:13:54,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 17:13:54,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 17:13:54,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 17:13:54,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 17:13:54,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 17:13:54,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 17:13:54,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 17:13:54,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 17:13:54,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 17:13:54,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 17:13:54,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 17:13:54,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 17:13:54,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 17:13:54,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 17:13:54,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 17:13:54,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 17:13:54,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 17:13:54,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 17:13:54,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 17:13:54,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 17:13:54,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 17:13:54,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 17:13:54,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 17:13:54,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 17:13:54,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 17:13:54,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 17:13:54,126 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 17:13:54,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 17:13:54,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 17:13:54,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 17:13:54,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 17:13:54,146 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 17:13:54,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 17:13:54,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 17:13:54,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 17:13:54,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 17:13:54,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 17:13:54,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 17:13:54,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 17:13:54,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 17:13:54,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 17:13:54,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 17:13:54,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 17:13:54,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 17:13:54,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 17:13:54,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 17:13:54,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 17:13:54,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 17:13:54,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 17:13:54,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 17:13:54,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 17:13:54,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 17:13:54,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 17:13:54,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:13:54,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 17:13:54,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 17:13:54,151 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 17:13:54,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 17:13:54,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 17:13:54,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 17:13:54,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 17:13:54,565 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 17:13:54,567 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 17:13:54,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c390548b6/7d9f381946754c9da2341d0e8627f4b4/FLAGbc7d4528c [2020-07-21 17:13:55,325 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 17:13:55,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 17:13:55,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c390548b6/7d9f381946754c9da2341d0e8627f4b4/FLAGbc7d4528c [2020-07-21 17:13:55,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c390548b6/7d9f381946754c9da2341d0e8627f4b4 [2020-07-21 17:13:55,762 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 17:13:55,766 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 17:13:55,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 17:13:55,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 17:13:55,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 17:13:55,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:13:55" (1/1) ... [2020-07-21 17:13:55,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b006d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:55, skipping insertion in model container [2020-07-21 17:13:55,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:13:55" (1/1) ... [2020-07-21 17:13:55,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 17:13:55,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 17:13:56,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:13:56,123 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 17:13:56,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:13:56,164 INFO L208 MainTranslator]: Completed translation [2020-07-21 17:13:56,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56 WrapperNode [2020-07-21 17:13:56,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 17:13:56,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 17:13:56,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 17:13:56,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 17:13:56,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (1/1) ... [2020-07-21 17:13:56,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (1/1) ... [2020-07-21 17:13:56,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (1/1) ... [2020-07-21 17:13:56,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (1/1) ... [2020-07-21 17:13:56,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (1/1) ... [2020-07-21 17:13:56,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (1/1) ... [2020-07-21 17:13:56,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (1/1) ... [2020-07-21 17:13:56,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 17:13:56,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 17:13:56,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 17:13:56,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 17:13:56,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (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 17:13:56,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 17:13:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 17:13:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 17:13:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 17:13:56,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 17:13:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 17:13:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 17:13:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 17:13:56,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 17:13:56,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 17:13:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 17:13:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 17:13:56,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 17:13:56,782 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 17:13:56,783 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 17:13:56,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:13:56 BoogieIcfgContainer [2020-07-21 17:13:56,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 17:13:56,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 17:13:56,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 17:13:56,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 17:13:56,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:13:55" (1/3) ... [2020-07-21 17:13:56,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44565890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:13:56, skipping insertion in model container [2020-07-21 17:13:56,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:13:56" (2/3) ... [2020-07-21 17:13:56,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44565890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:13:56, skipping insertion in model container [2020-07-21 17:13:56,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:13:56" (3/3) ... [2020-07-21 17:13:56,803 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-07-21 17:13:56,818 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 17:13:56,829 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 17:13:56,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 17:13:56,877 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 17:13:56,878 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 17:13:56,878 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 17:13:56,878 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 17:13:56,878 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 17:13:56,878 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 17:13:56,879 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 17:13:56,879 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 17:13:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-21 17:13:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 17:13:56,914 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:13:56,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:13:56,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:13:56,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:13:56,926 INFO L82 PathProgramCache]: Analyzing trace with hash -12471351, now seen corresponding path program 1 times [2020-07-21 17:13:56,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:13:56,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637051354] [2020-07-21 17:13:56,939 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 17:13:57,048 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:13:57,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:13:57,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 17:13:57,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:13:57,233 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 17:13:57,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:13:57,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637051354] [2020-07-21 17:13:57,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:13:57,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 17:13:57,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978889860] [2020-07-21 17:13:57,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 17:13:57,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:13:57,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 17:13:57,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 17:13:57,273 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-21 17:13:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:13:57,483 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2020-07-21 17:13:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 17:13:57,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 17:13:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:13:57,504 INFO L225 Difference]: With dead ends: 51 [2020-07-21 17:13:57,504 INFO L226 Difference]: Without dead ends: 19 [2020-07-21 17:13:57,511 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 17:13:57,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-21 17:13:57,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-21 17:13:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 17:13:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-21 17:13:57,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2020-07-21 17:13:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:13:57,576 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-21 17:13:57,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 17:13:57,577 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-21 17:13:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 17:13:57,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:13:57,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:13:57,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:13:57,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:13:57,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:13:57,796 INFO L82 PathProgramCache]: Analyzing trace with hash -793409467, now seen corresponding path program 1 times [2020-07-21 17:13:57,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:13:57,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825252413] [2020-07-21 17:13:57,797 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 17:13:57,876 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:13:57,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:13:57,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 17:13:57,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:13:58,223 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 17:13:58,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:13:58,279 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:14:02,854 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 17:14:02,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825252413] [2020-07-21 17:14:02,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:14:02,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 17:14:02,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886209409] [2020-07-21 17:14:02,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 17:14:02,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:02,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 17:14:02,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=134, Unknown=2, NotChecked=0, Total=182 [2020-07-21 17:14:02,868 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 14 states. [2020-07-21 17:14:18,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:18,046 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-07-21 17:14:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 17:14:18,055 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 17:14:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:18,057 INFO L225 Difference]: With dead ends: 40 [2020-07-21 17:14:18,057 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 17:14:18,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=60, Invalid=178, Unknown=2, NotChecked=0, Total=240 [2020-07-21 17:14:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 17:14:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 17:14:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 17:14:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-21 17:14:18,069 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2020-07-21 17:14:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:18,070 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-21 17:14:18,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 17:14:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-21 17:14:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 17:14:18,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:18,072 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 17:14:18,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:18,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:18,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:18,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1087804450, now seen corresponding path program 1 times [2020-07-21 17:14:18,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:18,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003303762] [2020-07-21 17:14:18,291 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 17:14:18,328 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:14:18,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:18,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 17:14:18,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:18,374 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 17:14:18,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:18,464 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 17:14:18,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003303762] [2020-07-21 17:14:18,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:14:18,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 17:14:18,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744374373] [2020-07-21 17:14:18,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 17:14:18,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:18,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 17:14:18,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-21 17:14:18,473 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2020-07-21 17:14:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:18,908 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2020-07-21 17:14:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 17:14:18,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 17:14:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:18,913 INFO L225 Difference]: With dead ends: 60 [2020-07-21 17:14:18,914 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 17:14:18,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-21 17:14:18,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 17:14:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-07-21 17:14:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 17:14:18,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-07-21 17:14:18,930 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 23 [2020-07-21 17:14:18,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:18,931 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-07-21 17:14:18,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 17:14:18,931 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-07-21 17:14:18,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 17:14:18,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:18,933 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 17:14:19,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:19,150 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:19,151 INFO L82 PathProgramCache]: Analyzing trace with hash -563580765, now seen corresponding path program 1 times [2020-07-21 17:14:19,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:19,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978801750] [2020-07-21 17:14:19,153 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 17:14:19,208 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:19,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:19,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 17:14:19,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:19,470 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 17:14:19,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:19,520 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:14:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 8 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 17:14:31,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978801750] [2020-07-21 17:14:31,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:14:31,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2020-07-21 17:14:31,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672962843] [2020-07-21 17:14:31,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 17:14:31,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:31,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 17:14:31,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=165, Unknown=4, NotChecked=0, Total=210 [2020-07-21 17:14:31,084 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 15 states. [2020-07-21 17:14:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:47,960 INFO L93 Difference]: Finished difference Result 83 states and 111 transitions. [2020-07-21 17:14:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 17:14:47,961 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-07-21 17:14:47,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:47,962 INFO L225 Difference]: With dead ends: 83 [2020-07-21 17:14:47,962 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 17:14:47,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=45, Invalid=191, Unknown=4, NotChecked=0, Total=240 [2020-07-21 17:14:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 17:14:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-21 17:14:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 17:14:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2020-07-21 17:14:47,972 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 25 [2020-07-21 17:14:47,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:47,973 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2020-07-21 17:14:47,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 17:14:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2020-07-21 17:14:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-21 17:14:47,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:47,974 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:48,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:48,188 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:48,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:48,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1723350151, now seen corresponding path program 1 times [2020-07-21 17:14:48,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:48,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686606603] [2020-07-21 17:14:48,191 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:48,224 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:14:48,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:48,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 17:14:48,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:14:48,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:15:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 27 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:15:04,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686606603] [2020-07-21 17:15:04,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:15:04,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-21 17:15:04,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361999866] [2020-07-21 17:15:04,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 17:15:04,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:15:04,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 17:15:04,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=86, Unknown=8, NotChecked=0, Total=132 [2020-07-21 17:15:04,891 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand 12 states. [2020-07-21 17:15:07,086 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 3) 4294967296))) is different from false [2020-07-21 17:15:09,157 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 3) 4294967296))) is different from false [2020-07-21 17:15:23,659 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 3) 4294967296))) is different from false [2020-07-21 17:16:03,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:16:03,092 INFO L93 Difference]: Finished difference Result 133 states and 177 transitions. [2020-07-21 17:16:03,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 17:16:03,092 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-07-21 17:16:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:16:03,095 INFO L225 Difference]: With dead ends: 133 [2020-07-21 17:16:03,095 INFO L226 Difference]: Without dead ends: 99 [2020-07-21 17:16:03,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=44, Invalid=89, Unknown=11, NotChecked=66, Total=210 [2020-07-21 17:16:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-21 17:16:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2020-07-21 17:16:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-21 17:16:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2020-07-21 17:16:03,108 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 113 transitions. Word has length 33 [2020-07-21 17:16:03,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:16:03,109 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 113 transitions. [2020-07-21 17:16:03,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 17:16:03,109 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 113 transitions. [2020-07-21 17:16:03,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 17:16:03,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:16:03,111 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:16:03,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:03,315 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:16:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:16:03,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1638442356, now seen corresponding path program 2 times [2020-07-21 17:16:03,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:16:03,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477579567] [2020-07-21 17:16:03,317 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:03,352 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:16:03,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:16:03,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 17:16:03,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:16:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 17:16:03,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:16:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-21 17:16:03,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477579567] [2020-07-21 17:16:03,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:16:03,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2020-07-21 17:16:03,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300826306] [2020-07-21 17:16:03,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 17:16:03,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:16:03,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 17:16:03,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-21 17:16:03,456 INFO L87 Difference]: Start difference. First operand 89 states and 113 transitions. Second operand 10 states. [2020-07-21 17:16:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:16:05,727 INFO L93 Difference]: Finished difference Result 150 states and 201 transitions. [2020-07-21 17:16:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 17:16:05,728 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-07-21 17:16:05,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:16:05,729 INFO L225 Difference]: With dead ends: 150 [2020-07-21 17:16:05,729 INFO L226 Difference]: Without dead ends: 101 [2020-07-21 17:16:05,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-21 17:16:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-21 17:16:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 89. [2020-07-21 17:16:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-21 17:16:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2020-07-21 17:16:05,742 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 41 [2020-07-21 17:16:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:16:05,742 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2020-07-21 17:16:05,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 17:16:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2020-07-21 17:16:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-21 17:16:05,743 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:16:05,744 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:16:05,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:05,947 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:16:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:16:05,948 INFO L82 PathProgramCache]: Analyzing trace with hash -937377778, now seen corresponding path program 3 times [2020-07-21 17:16:05,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:16:05,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39183488] [2020-07-21 17:16:05,949 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:05,994 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:16:05,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:16:05,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 41 conjunts are in the unsatisfiable core [2020-07-21 17:16:05,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:16:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:16:06,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:16:06,463 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:19:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 4 proven. 0 refuted. 75 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 17:19:15,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39183488] [2020-07-21 17:19:15,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:19:15,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 32 [2020-07-21 17:19:15,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212496301] [2020-07-21 17:19:15,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-21 17:19:15,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:19:15,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-21 17:19:15,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=754, Unknown=72, NotChecked=0, Total=992 [2020-07-21 17:19:15,452 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 32 states. [2020-07-21 17:19:38,859 WARN L193 SmtUtils]: Spent 8.33 s on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-07-21 17:20:12,202 WARN L193 SmtUtils]: Spent 12.63 s on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-07-21 17:21:18,760 WARN L193 SmtUtils]: Spent 8.24 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 17:22:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:22:01,387 INFO L93 Difference]: Finished difference Result 115 states and 140 transitions. [2020-07-21 17:22:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 17:22:01,388 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 41 [2020-07-21 17:22:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:22:01,388 INFO L225 Difference]: With dead ends: 115 [2020-07-21 17:22:01,389 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 17:22:01,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 323.4s TimeCoverageRelationStatistics Valid=249, Invalid=1040, Unknown=117, NotChecked=0, Total=1406 [2020-07-21 17:22:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 17:22:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 17:22:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 17:22:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 17:22:01,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-07-21 17:22:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:22:01,392 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 17:22:01,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-21 17:22:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 17:22:01,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 17:22:01,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:22:01,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 17:22:08,169 WARN L193 SmtUtils]: Spent 6.37 s on a formula simplification. DAG size of input: 119 DAG size of output: 13 [2020-07-21 17:22:08,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:22:08,219 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:22:08,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:22:08,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:22:08,220 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 17:22:08,220 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:22:08,220 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:22:08,221 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:22:08,221 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 17:22:08,221 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:22:08,221 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:22:08,221 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 17:22:08,221 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-07-21 17:22:08,221 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 33) no Hoare annotation was computed. [2020-07-21 17:22:08,222 INFO L268 CegarLoopResult]: For program point L23(lines 23 28) no Hoare annotation was computed. [2020-07-21 17:22:08,222 INFO L268 CegarLoopResult]: For program point L25-2(lines 21 28) no Hoare annotation was computed. [2020-07-21 17:22:08,222 INFO L268 CegarLoopResult]: For program point L21(lines 21 28) no Hoare annotation was computed. [2020-07-21 17:22:08,222 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 30) the Hoare annotation is: (= (mod (+ main_~l~0 5) 4294967296) (mod (+ main_~v4~0 main_~i~0 main_~j~0 main_~k~0 5) 4294967296)) [2020-07-21 17:22:08,223 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 30) the Hoare annotation is: (= (mod main_~l~0 4294967296) (mod (+ main_~v4~0 main_~i~0 main_~j~0 main_~k~0) 4294967296)) [2020-07-21 17:22:08,223 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 33) no Hoare annotation was computed. [2020-07-21 17:22:08,223 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 33) the Hoare annotation is: true [2020-07-21 17:22:08,223 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-21 17:22:08,223 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 17:22:08,224 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 17:22:08,224 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 17:22:08,224 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 17:22:08,224 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 17:22:08,227 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 17:22:08,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:22:08 BoogieIcfgContainer [2020-07-21 17:22:08,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 17:22:08,247 INFO L168 Benchmark]: Toolchain (without parser) took 492482.57 ms. Allocated memory was 144.2 MB in the beginning and 270.0 MB in the end (delta: 125.8 MB). Free memory was 102.2 MB in the beginning and 106.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 121.1 MB. Max. memory is 7.1 GB. [2020-07-21 17:22:08,248 INFO L168 Benchmark]: CDTParser took 1.05 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 17:22:08,249 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.94 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 92.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-21 17:22:08,250 INFO L168 Benchmark]: Boogie Preprocessor took 159.35 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 92.1 MB in the beginning and 180.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-21 17:22:08,251 INFO L168 Benchmark]: RCFGBuilder took 464.00 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 166.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-21 17:22:08,252 INFO L168 Benchmark]: TraceAbstraction took 491452.86 ms. Allocated memory was 202.4 MB in the beginning and 270.0 MB in the end (delta: 67.6 MB). Free memory was 166.0 MB in the beginning and 106.9 MB in the end (delta: 59.1 MB). Peak memory consumption was 126.7 MB. Max. memory is 7.1 GB. [2020-07-21 17:22:08,256 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 397.94 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 92.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.35 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 92.1 MB in the beginning and 180.0 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.00 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 166.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 491452.86 ms. Allocated memory was 202.4 MB in the beginning and 270.0 MB in the end (delta: 67.6 MB). Free memory was 166.0 MB in the beginning and 106.9 MB in the end (delta: 59.1 MB). Peak memory consumption was 126.7 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 + 5) % 4294967296 == (v4 + i + j + k + 5) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 484.7s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 259.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 166 SDslu, 477 SDs, 0 SdLazy, 1227 SolverSat, 93 SolverUnsat, 56 SolverUnknown, 0 SolverNotchecked, 114.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 268 SyntacticMatches, 13 SemanticMatches, 99 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 363.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=5, 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, 7 MinimizatonAttempts, 27 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 20 PreInvPairs, 39 NumberOfFragments, 30 HoareAnnotationTreeSize, 20 FomulaSimplifications, 159 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 498 FormulaSimplificationTreeSizeReductionInter, 6.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 223.3s InterpolantComputationTime, 190 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 355 ConstructedInterpolants, 2 QuantifiedInterpolants, 78272 SizeOfPredicates, 13 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 130/470 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...