/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:20:34,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:20:34,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:20:34,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:20:34,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:20:34,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:20:34,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:20:34,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:20:34,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:20:34,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:20:34,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:20:34,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:20:34,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:20:34,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:20:34,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:20:34,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:20:34,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:20:34,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:20:34,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:20:34,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:20:34,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:20:34,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:20:34,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:20:34,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:20:34,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 05:20:34,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:20:34,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:20:34,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:20:34,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:20:34,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:20:34,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:20:34,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:20:34,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:20:34,474 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:20:34,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:20:34,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:20:34,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:20:34,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:20:34,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:20:34,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:20:34,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:20:34,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:20:34,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:20:34,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:20:34,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:20:34,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:20:34,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:20:34,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:20:34,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:20:34,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:20:34,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:20:34,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:20:34,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:20:34,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:20:34,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:20:34,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:20:34,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:20:34,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:20:34,484 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:20:34,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:20:34,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:20:34,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:20:34,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:20:34,829 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:20:34,829 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-08-19 05:20:34,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74e925f77/d42ba5e9d3ef46e982ba9fb103782c17/FLAGeff30a539 [2020-08-19 05:20:35,396 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:20:35,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-08-19 05:20:35,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74e925f77/d42ba5e9d3ef46e982ba9fb103782c17/FLAGeff30a539 [2020-08-19 05:20:35,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74e925f77/d42ba5e9d3ef46e982ba9fb103782c17 [2020-08-19 05:20:35,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:20:35,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:20:35,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:20:35,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:20:35,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:20:35,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:20:35" (1/1) ... [2020-08-19 05:20:35,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:35, skipping insertion in model container [2020-08-19 05:20:35,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:20:35" (1/1) ... [2020-08-19 05:20:35,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:20:35,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:20:36,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:20:36,070 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:20:36,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:20:36,106 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:20:36,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36 WrapperNode [2020-08-19 05:20:36,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:20:36,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:20:36,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:20:36,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:20:36,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (1/1) ... [2020-08-19 05:20:36,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (1/1) ... [2020-08-19 05:20:36,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (1/1) ... [2020-08-19 05:20:36,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (1/1) ... [2020-08-19 05:20:36,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (1/1) ... [2020-08-19 05:20:36,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (1/1) ... [2020-08-19 05:20:36,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (1/1) ... [2020-08-19 05:20:36,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:20:36,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:20:36,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:20:36,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:20:36,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 05:20:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:20:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:20:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 05:20:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 05:20:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:20:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:20:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 05:20:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 05:20:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 05:20:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:20:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:20:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:20:36,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:20:36,491 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:20:36,492 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 05:20:36,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:20:36 BoogieIcfgContainer [2020-08-19 05:20:36,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:20:36,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:20:36,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:20:36,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:20:36,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:20:35" (1/3) ... [2020-08-19 05:20:36,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3c66b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:20:36, skipping insertion in model container [2020-08-19 05:20:36,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:20:36" (2/3) ... [2020-08-19 05:20:36,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f3c66b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:20:36, skipping insertion in model container [2020-08-19 05:20:36,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:20:36" (3/3) ... [2020-08-19 05:20:36,519 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-08-19 05:20:36,543 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:20:36,558 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:20:36,585 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:20:36,619 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:20:36,619 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:20:36,619 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:20:36,620 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:20:36,620 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:20:36,620 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:20:36,620 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:20:36,620 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:20:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-19 05:20:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 05:20:36,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:36,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:36,654 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:36,660 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-08-19 05:20:36,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:36,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759198087] [2020-08-19 05:20:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:36,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:36,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759198087] [2020-08-19 05:20:36,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:20:36,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:20:36,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538686523] [2020-08-19 05:20:36,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:20:36,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:36,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:20:36,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:20:36,838 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-08-19 05:20:36,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:36,894 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-08-19 05:20:36,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:20:36,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-19 05:20:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:36,905 INFO L225 Difference]: With dead ends: 35 [2020-08-19 05:20:36,905 INFO L226 Difference]: Without dead ends: 16 [2020-08-19 05:20:36,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:20:36,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-19 05:20:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-19 05:20:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 05:20:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-08-19 05:20:36,950 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-08-19 05:20:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:36,951 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-08-19 05:20:36,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:20:36,951 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-08-19 05:20:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 05:20:36,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:36,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:36,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:20:36,953 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:36,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:36,954 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-08-19 05:20:36,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:36,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266700434] [2020-08-19 05:20:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:37,243 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-08-19 05:20:37,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:37,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266700434] [2020-08-19 05:20:37,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:20:37,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 05:20:37,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128101352] [2020-08-19 05:20:37,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:20:37,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:37,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:20:37,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:20:37,382 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-08-19 05:20:37,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:37,565 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-08-19 05:20:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:20:37,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-19 05:20:37,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:37,569 INFO L225 Difference]: With dead ends: 24 [2020-08-19 05:20:37,569 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 05:20:37,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:20:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 05:20:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-08-19 05:20:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-19 05:20:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-08-19 05:20:37,578 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-08-19 05:20:37,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:37,579 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-08-19 05:20:37,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:20:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-08-19 05:20:37,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 05:20:37,580 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:37,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:37,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:20:37,581 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:37,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:37,581 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-08-19 05:20:37,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:37,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286394180] [2020-08-19 05:20:37,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:38,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286394180] [2020-08-19 05:20:38,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:38,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:20:38,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493351097] [2020-08-19 05:20:38,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:20:38,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:38,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:20:38,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:20:38,131 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 12 states. [2020-08-19 05:20:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:40,529 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-08-19 05:20:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:20:40,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-08-19 05:20:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:40,531 INFO L225 Difference]: With dead ends: 35 [2020-08-19 05:20:40,531 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 05:20:40,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:20:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 05:20:40,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-08-19 05:20:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-19 05:20:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-08-19 05:20:40,538 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2020-08-19 05:20:40,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:40,539 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-08-19 05:20:40,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:20:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-08-19 05:20:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 05:20:40,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:40,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:40,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:20:40,541 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:40,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:40,541 INFO L82 PathProgramCache]: Analyzing trace with hash 396453102, now seen corresponding path program 2 times [2020-08-19 05:20:40,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:40,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396928482] [2020-08-19 05:20:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:40,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396928482] [2020-08-19 05:20:40,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:40,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 05:20:40,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055977083] [2020-08-19 05:20:40,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:20:40,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:20:40,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:20:40,805 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2020-08-19 05:20:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:40,952 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-08-19 05:20:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:20:40,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-19 05:20:40,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:40,954 INFO L225 Difference]: With dead ends: 31 [2020-08-19 05:20:40,954 INFO L226 Difference]: Without dead ends: 22 [2020-08-19 05:20:40,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:20:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-19 05:20:40,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-08-19 05:20:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 05:20:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-08-19 05:20:40,963 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-08-19 05:20:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:40,964 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-08-19 05:20:40,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:20:40,964 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-08-19 05:20:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 05:20:40,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:40,965 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:40,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:20:40,965 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:40,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:40,966 INFO L82 PathProgramCache]: Analyzing trace with hash -291244452, now seen corresponding path program 1 times [2020-08-19 05:20:40,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:40,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342976492] [2020-08-19 05:20:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:41,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:41,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342976492] [2020-08-19 05:20:41,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:41,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 05:20:41,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744587404] [2020-08-19 05:20:41,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:20:41,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:41,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:20:41,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:20:41,083 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-08-19 05:20:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:41,171 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-08-19 05:20:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:20:41,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-19 05:20:41,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:41,173 INFO L225 Difference]: With dead ends: 32 [2020-08-19 05:20:41,173 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 05:20:41,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:20:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 05:20:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-08-19 05:20:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 05:20:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-08-19 05:20:41,180 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-08-19 05:20:41,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:41,180 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-08-19 05:20:41,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:20:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-08-19 05:20:41,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 05:20:41,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:41,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:41,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:20:41,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:41,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:41,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1483762910, now seen corresponding path program 1 times [2020-08-19 05:20:41,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:41,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317019693] [2020-08-19 05:20:41,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:41,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:41,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317019693] [2020-08-19 05:20:41,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:41,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:20:41,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433504864] [2020-08-19 05:20:41,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:20:41,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:41,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:20:41,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:20:41,918 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 14 states. [2020-08-19 05:20:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:46,527 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-08-19 05:20:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:20:46,527 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-08-19 05:20:46,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:46,528 INFO L225 Difference]: With dead ends: 31 [2020-08-19 05:20:46,528 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 05:20:46,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:20:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 05:20:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-19 05:20:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 05:20:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-08-19 05:20:46,535 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2020-08-19 05:20:46,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:46,536 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-08-19 05:20:46,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:20:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-08-19 05:20:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 05:20:46,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:46,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:46,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:20:46,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:46,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:46,538 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 2 times [2020-08-19 05:20:46,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:46,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550835506] [2020-08-19 05:20:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:46,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:20:46,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550835506] [2020-08-19 05:20:46,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:46,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 05:20:46,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206537077] [2020-08-19 05:20:46,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:20:46,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:46,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:20:46,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:20:46,851 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-08-19 05:20:51,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:51,191 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-08-19 05:20:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:20:51,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-08-19 05:20:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:51,193 INFO L225 Difference]: With dead ends: 35 [2020-08-19 05:20:51,193 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 05:20:51,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:20:51,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 05:20:51,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-19 05:20:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 05:20:51,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-19 05:20:51,199 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-08-19 05:20:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:51,199 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-19 05:20:51,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:20:51,199 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-19 05:20:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 05:20:51,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:51,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:51,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:20:51,201 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:51,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:51,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-08-19 05:20:51,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:51,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735991338] [2020-08-19 05:20:51,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:51,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-19 05:20:51,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735991338] [2020-08-19 05:20:51,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:51,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 05:20:51,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728629657] [2020-08-19 05:20:51,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:20:51,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:51,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:20:51,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:20:51,393 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2020-08-19 05:20:51,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:51,500 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-08-19 05:20:51,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:20:51,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-08-19 05:20:51,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:51,502 INFO L225 Difference]: With dead ends: 25 [2020-08-19 05:20:51,502 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 05:20:51,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:20:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 05:20:51,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 05:20:51,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 05:20:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 05:20:51,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-08-19 05:20:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:51,503 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 05:20:51,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:20:51,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 05:20:51,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 05:20:51,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:20:51,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 05:20:51,657 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 05:20:51,657 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-19 05:20:51,657 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 05:20:51,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 05:20:51,658 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-19 05:20:51,658 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 05:20:51,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 05:20:51,658 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 05:20:51,658 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 05:20:51,658 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 05:20:51,659 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 05:20:51,659 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-08-19 05:20:51,659 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-19 05:20:51,659 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-08-19 05:20:51,659 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-08-19 05:20:51,659 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-08-19 05:20:51,659 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-08-19 05:20:51,659 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-08-19 05:20:51,659 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-08-19 05:20:51,660 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-19 05:20:51,660 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0 main_~k~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ main_~l~0 (* 4294967296 .cse2)))) (and (< .cse0 (+ main_~i~0 main_~j~0 main_~k~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 main_~k~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-19 05:20:51,660 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 05:20:51,660 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 05:20:51,660 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 05:20:51,661 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 05:20:51,661 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 05:20:51,661 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 05:20:51,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:20:51 BoogieIcfgContainer [2020-08-19 05:20:51,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:20:51,685 INFO L168 Benchmark]: Toolchain (without parser) took 15875.70 ms. Allocated memory was 141.0 MB in the beginning and 244.8 MB in the end (delta: 103.8 MB). Free memory was 103.9 MB in the beginning and 157.2 MB in the end (delta: -53.3 MB). Peak memory consumption was 50.5 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:51,687 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 05:20:51,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.52 ms. Allocated memory is still 141.0 MB. Free memory was 103.7 MB in the beginning and 94.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:51,689 INFO L168 Benchmark]: Boogie Preprocessor took 120.77 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.0 MB in the beginning and 181.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:51,695 INFO L168 Benchmark]: RCFGBuilder took 274.55 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 168.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:51,696 INFO L168 Benchmark]: TraceAbstraction took 15177.84 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 167.5 MB in the beginning and 157.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-08-19 05:20:51,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.52 ms. Allocated memory is still 141.0 MB. Free memory was 103.7 MB in the beginning and 94.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.77 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 94.0 MB in the beginning and 181.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.55 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 168.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15177.84 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 167.5 MB in the beginning and 157.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 51.6 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: 22]: Loop Invariant Derived loop invariant: ((l <= i + j + k && i + j + k <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.8s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 11.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 180 SDslu, 169 SDs, 0 SdLazy, 378 SolverSat, 69 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=7, 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, 8 MinimizatonAttempts, 10 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 22 NumberOfFragments, 98 HoareAnnotationTreeSize, 15 FomulaSimplifications, 414 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 26609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 21/41 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...