/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:08:01,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:08:01,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:08:01,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-09-24 15:08:01,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:08:01,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:08:01,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:08:01,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:08:01,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:08:01,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:08:01,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:08:01,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:08:01,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:08:01,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:08:01,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:08:01,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:08:01,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:08:01,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:08:01,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:08:01,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:08:01,625 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 [2020-09-24 15:08:01,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:08:01,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:08:01,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:08:01,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:08:01,680 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:08:01,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:08:01,681 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:08:01,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:08:01,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:08:01,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:08:01,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:08:01,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:08:01,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:08:01,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:08:01,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:08:01,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:08:01,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:08:01,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:08:01,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:08:01,684 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:08:01,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:08:01,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:08:01,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:08:01,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:08:01,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:08:01,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:08:01,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:08:01,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:08:01,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:08:01,687 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:08:02,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:08:02,160 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:08:02,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:08:02,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:08:02,166 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:08:02,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-09-24 15:08:02,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fabddd3a8/140ebf71837d4885a2bfb5752d4d5fff/FLAG2be016c25 [2020-09-24 15:08:02,811 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:08:02,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i [2020-09-24 15:08:02,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fabddd3a8/140ebf71837d4885a2bfb5752d4d5fff/FLAG2be016c25 [2020-09-24 15:08:03,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fabddd3a8/140ebf71837d4885a2bfb5752d4d5fff [2020-09-24 15:08:03,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:08:03,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:08:03,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:08:03,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:08:03,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:08:03,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bcc6958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03, skipping insertion in model container [2020-09-24 15:08:03,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:08:03,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:08:03,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:08:03,482 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:08:03,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:08:03,532 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:08:03,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03 WrapperNode [2020-09-24 15:08:03,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:08:03,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:08:03,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:08:03,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:08:03,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (1/1) ... [2020-09-24 15:08:03,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:08:03,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:08:03,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:08:03,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:08:03,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (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 [2020-09-24 15:08:03,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:08:03,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:08:03,739 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:08:03,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 15:08:03,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:08:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:08:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:08:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:08:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 15:08:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 15:08:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:08:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:08:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:08:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:08:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:08:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:08:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:08:04,069 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:08:04,069 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 15:08:04,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:08:04 BoogieIcfgContainer [2020-09-24 15:08:04,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:08:04,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:08:04,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:08:04,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:08:04,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:08:03" (1/3) ... [2020-09-24 15:08:04,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e6e592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:08:04, skipping insertion in model container [2020-09-24 15:08:04,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:08:03" (2/3) ... [2020-09-24 15:08:04,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e6e592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:08:04, skipping insertion in model container [2020-09-24 15:08:04,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:08:04" (3/3) ... [2020-09-24 15:08:04,085 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2020-09-24 15:08:04,096 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:08:04,106 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:08:04,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:08:04,173 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:08:04,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:08:04,174 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:08:04,174 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:08:04,174 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:08:04,174 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:08:04,174 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:08:04,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:08:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-24 15:08:04,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 15:08:04,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:08:04,210 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:08:04,211 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:08:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:08:04,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1727331883, now seen corresponding path program 1 times [2020-09-24 15:08:04,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:08:04,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97145229] [2020-09-24 15:08:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:08:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:08:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:08:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:04,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 15:08:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 15:08:04,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97145229] [2020-09-24 15:08:04,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:08:04,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 15:08:04,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867274240] [2020-09-24 15:08:04,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:08:04,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:08:04,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:08:04,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:08:04,716 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 9 states. [2020-09-24 15:08:05,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:08:05,314 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions. [2020-09-24 15:08:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:08:05,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 15:08:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:08:05,345 INFO L225 Difference]: With dead ends: 137 [2020-09-24 15:08:05,345 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 15:08:05,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:08:05,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 15:08:05,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2020-09-24 15:08:05,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 15:08:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-24 15:08:05,410 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 30 [2020-09-24 15:08:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:08:05,411 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-24 15:08:05,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:08:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-24 15:08:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:08:05,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:08:05,414 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:08:05,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:08:05,415 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:08:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:08:05,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1086220015, now seen corresponding path program 1 times [2020-09-24 15:08:05,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:08:05,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034079563] [2020-09-24 15:08:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:08:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:05,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:08:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:08:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:05,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 15:08:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 15:08:05,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034079563] [2020-09-24 15:08:05,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:08:05,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:08:05,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856458570] [2020-09-24 15:08:05,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:08:05,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:08:05,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:08:05,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:08:05,536 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 4 states. [2020-09-24 15:08:05,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:08:05,669 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2020-09-24 15:08:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:08:05,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 15:08:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:08:05,671 INFO L225 Difference]: With dead ends: 91 [2020-09-24 15:08:05,672 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 15:08:05,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:08:05,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 15:08:05,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2020-09-24 15:08:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 15:08:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-24 15:08:05,685 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 34 [2020-09-24 15:08:05,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:08:05,686 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-24 15:08:05,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:08:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-24 15:08:05,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 15:08:05,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:08:05,691 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:08:05,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:08:05,692 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:08:05,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:08:05,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1811286385, now seen corresponding path program 1 times [2020-09-24 15:08:05,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:08:05,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900229046] [2020-09-24 15:08:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:08:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:06,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:08:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:08:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:06,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 15:08:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:06,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 15:08:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:06,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 15:08:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:06,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 15:08:06,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900229046] [2020-09-24 15:08:06,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:08:06,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 15:08:06,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344988093] [2020-09-24 15:08:06,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:08:06,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:08:06,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:08:06,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:08:06,166 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 12 states. [2020-09-24 15:08:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:08:06,795 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2020-09-24 15:08:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 15:08:06,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-24 15:08:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:08:06,799 INFO L225 Difference]: With dead ends: 84 [2020-09-24 15:08:06,799 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 15:08:06,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:08:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 15:08:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2020-09-24 15:08:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 15:08:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-24 15:08:06,826 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 52 [2020-09-24 15:08:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:08:06,827 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-24 15:08:06,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:08:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-24 15:08:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 15:08:06,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:08:06,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:08:06,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:08:06,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:08:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:08:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2082234165, now seen corresponding path program 1 times [2020-09-24 15:08:06,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:08:06,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076354618] [2020-09-24 15:08:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:08:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:07,734 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 49 [2020-09-24 15:08:07,965 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 62 [2020-09-24 15:08:13,092 WARN L193 SmtUtils]: Spent 5.08 s on a formula simplification. DAG size of input: 136 DAG size of output: 70 [2020-09-24 15:08:13,975 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 88 [2020-09-24 15:08:14,584 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 79 [2020-09-24 15:08:15,073 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 61 [2020-09-24 15:08:15,550 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 62 [2020-09-24 15:08:15,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:08:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:15,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:08:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 15:08:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 15:08:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 15:08:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 15:08:16,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076354618] [2020-09-24 15:08:16,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:08:16,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 15:08:16,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051160055] [2020-09-24 15:08:16,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 15:08:16,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:08:16,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 15:08:16,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:08:16,178 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 18 states. [2020-09-24 15:08:16,886 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-09-24 15:08:17,335 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-09-24 15:08:21,981 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 127 DAG size of output: 117 [2020-09-24 15:08:26,562 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 134 [2020-09-24 15:08:31,051 WARN L193 SmtUtils]: Spent 4.37 s on a formula simplification that was a NOOP. DAG size: 114 [2020-09-24 15:08:31,378 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-09-24 15:08:33,693 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 87 [2020-09-24 15:08:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:08:34,047 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-24 15:08:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 15:08:34,053 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2020-09-24 15:08:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:08:34,055 INFO L225 Difference]: With dead ends: 73 [2020-09-24 15:08:34,055 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 15:08:34,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2020-09-24 15:08:34,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 15:08:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2020-09-24 15:08:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 15:08:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-24 15:08:34,066 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 56 [2020-09-24 15:08:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:08:34,067 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-24 15:08:34,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 15:08:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-24 15:08:34,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 15:08:34,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:08:34,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:08:34,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:08:34,070 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:08:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:08:34,070 INFO L82 PathProgramCache]: Analyzing trace with hash -261126320, now seen corresponding path program 1 times [2020-09-24 15:08:34,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:08:34,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544442181] [2020-09-24 15:08:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:08:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:34,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:08:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:34,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 15:08:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:34,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-24 15:08:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 15:08:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 15:08:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:34,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 15:08:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:08:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 15:08:34,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544442181] [2020-09-24 15:08:34,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:08:34,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 15:08:34,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466397370] [2020-09-24 15:08:34,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:08:34,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:08:34,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:08:34,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:08:34,565 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 12 states. [2020-09-24 15:08:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:08:37,665 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-09-24 15:08:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 15:08:37,666 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-09-24 15:08:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:08:37,667 INFO L225 Difference]: With dead ends: 87 [2020-09-24 15:08:37,667 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:08:37,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2020-09-24 15:08:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:08:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:08:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:08:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:08:37,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2020-09-24 15:08:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:08:37,670 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:08:37,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:08:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:08:37,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:08:37,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:08:37,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:08:38,085 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2020-09-24 15:08:38,275 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-09-24 15:08:40,618 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-24 15:08:40,628 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 15:08:40,628 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 15:08:40,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:08:40,629 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 15:08:40,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:08:40,629 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:08:40,629 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:08:40,630 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:08:40,630 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:08:40,630 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 9 11) the Hoare annotation is: true [2020-09-24 15:08:40,630 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 15:08:40,630 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 15:08:40,630 INFO L268 CegarLoopResult]: For program point L10-3(lines 9 11) no Hoare annotation was computed. [2020-09-24 15:08:40,630 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-09-24 15:08:40,630 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 15:08:40,631 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 15:08:40,631 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 22 50) no Hoare annotation was computed. [2020-09-24 15:08:40,631 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-24 15:08:40,631 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-24 15:08:40,632 INFO L264 CegarLoopResult]: At program point L44-2(line 44) the Hoare annotation is: (let ((.cse22 (div main_~index2~0 4294967296))) (let ((.cse14 (div main_~index1~0 4294967296)) (.cse21 (* 4294967296 .cse22))) (let ((.cse5 (select |#memory_int| |main_~#array~0.base|)) (.cse18 (* .cse22 (- 17179869184))) (.cse19 (* main_~index2~0 4)) (.cse20 (+ .cse21 2147483647)) (.cse13 (* 4294967296 .cse14))) (let ((.cse1 (+ .cse13 main_~index2~0 1)) (.cse0 (+ .cse21 main_~index1~0)) (.cse16 (* 4294967296 (div |main_#t~mem6| 4294967296))) (.cse15 (+ |main_#t~mem6| (* 4294967296 (div |main_#t~mem7| 4294967296)))) (.cse8 (< .cse20 main_~index2~0)) (.cse10 (select .cse5 (+ .cse18 .cse19 |main_~#array~0.offset| (- 17179869184)))) (.cse12 (<= main_~index2~0 .cse20)) (.cse4 (select .cse5 (+ .cse18 .cse19 |main_~#array~0.offset|)))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (let ((.cse6 (* .cse14 (- 17179869184))) (.cse7 (* main_~index1~0 4)) (.cse2 (+ .cse13 2147483647))) (or (and (<= main_~index1~0 .cse2) (<= (let ((.cse3 (select .cse5 (+ .cse6 .cse7 |main_~#array~0.offset|)))) (+ .cse3 (* 4294967296 (div (+ (* .cse3 (- 1)) .cse4 4294967295) 4294967296)))) .cse4)) (and (let ((.cse9 (select .cse5 (+ .cse6 .cse7 |main_~#array~0.offset| (- 17179869184))))) (let ((.cse11 (* .cse9 (- 1)))) (or (and .cse8 (<= (+ .cse9 (* 4294967296 (div (+ .cse10 .cse11 4294967295) 4294967296))) .cse10)) (and .cse12 (<= (+ .cse9 (* 4294967296 (div (+ .cse4 .cse11 4294967295) 4294967296))) .cse4))))) (< .cse2 main_~index1~0)))) (< .cse15 (+ |main_#t~mem7| .cse16 1)) (<= (+ |main_#t~mem7| .cse16) .cse15) (let ((.cse17 (* |main_#t~mem6| (- 1)))) (or (and .cse8 (<= (+ |main_#t~mem6| (* 4294967296 (div (+ .cse17 .cse10 4294967295) 4294967296))) .cse10)) (and .cse12 (<= (+ |main_#t~mem6| (* 4294967296 (div (+ .cse4 .cse17 4294967295) 4294967296))) .cse4))))))))) [2020-09-24 15:08:40,632 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-24 15:08:40,632 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-24 15:08:40,632 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-24 15:08:40,632 INFO L264 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse1 (div main_~index2~0 4294967296))) (let ((.cse0 (select |#memory_int| |main_~#array~0.base|)) (.cse3 (* 4294967296 .cse1)) (.cse2 (div main_~index1~0 4294967296))) (and (= (select .cse0 (+ (* .cse1 (- 17179869184)) (* main_~index2~0 4) |main_~#array~0.offset|)) |main_#t~mem3|) (= (select .cse0 (+ (* .cse2 (- 17179869184)) (* main_~index1~0 4) |main_~#array~0.offset|)) |main_#t~mem2|) (<= main_~index2~0 (+ .cse3 99999)) (<= (+ .cse3 main_~index1~0 1) (+ (* 4294967296 .cse2) main_~index2~0))))) [2020-09-24 15:08:40,633 INFO L268 CegarLoopResult]: For program point L36-2(line 36) no Hoare annotation was computed. [2020-09-24 15:08:40,633 INFO L268 CegarLoopResult]: For program point L36-3(line 36) no Hoare annotation was computed. [2020-09-24 15:08:40,633 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (= main_~loop_entered~0 0) [2020-09-24 15:08:40,633 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 15:08:40,633 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 15:08:40,633 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-24 15:08:40,633 INFO L268 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-09-24 15:08:40,634 INFO L268 CegarLoopResult]: For program point L45-2(line 45) no Hoare annotation was computed. [2020-09-24 15:08:40,634 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 15:08:40,634 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-24 15:08:40,634 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-24 15:08:40,634 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 15:08:40,634 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-24 15:08:40,635 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 15:08:40,635 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 15:08:40,635 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 22 50) no Hoare annotation was computed. [2020-09-24 15:08:40,635 INFO L268 CegarLoopResult]: For program point L46-2(line 46) no Hoare annotation was computed. [2020-09-24 15:08:40,635 INFO L268 CegarLoopResult]: For program point L42(lines 42 48) no Hoare annotation was computed. [2020-09-24 15:08:40,635 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 15:08:40,635 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-24 15:08:40,636 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-24 15:08:40,636 INFO L264 CegarLoopResult]: At program point L34-1(lines 32 40) the Hoare annotation is: (let ((.cse7 (div main_~index2~0 4294967296))) (let ((.cse2 (* 4294967296 .cse7))) (or (let ((.cse6 (div main_~index1~0 4294967296))) (let ((.cse0 (+ .cse2 main_~index1~0)) (.cse1 (* 4294967296 .cse6))) (and (<= .cse0 (+ .cse1 main_~index2~0 1)) (<= main_~index2~0 (+ .cse2 99998)) (<= (+ .cse1 1) main_~index1~0) (or (let ((.cse5 (select |#memory_int| |main_~#array~0.base|))) (let ((.cse4 (select .cse5 (+ (* .cse7 (- 17179869184)) (* main_~index2~0 4) |main_~#array~0.offset|)))) (<= (let ((.cse3 (select .cse5 (+ (* .cse6 (- 17179869184)) (* main_~index1~0 4) |main_~#array~0.offset|)))) (+ .cse3 (* 4294967296 (div (+ (* .cse3 (- 1)) .cse4 4294967295) 4294967296)))) .cse4))) (<= .cse0 (+ .cse1 main_~index2~0)))))) (and (<= main_~index2~0 (+ .cse2 99999)) (= main_~loop_entered~0 0))))) [2020-09-24 15:08:40,636 INFO L268 CegarLoopResult]: For program point L34-2(lines 23 50) no Hoare annotation was computed. [2020-09-24 15:08:40,636 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (= main_~loop_entered~0 0) [2020-09-24 15:08:40,636 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 22 50) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 15:08:40,637 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 15:08:40,637 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 15:08:40,637 INFO L264 CegarLoopResult]: At program point L43-2(lines 43 47) the Hoare annotation is: (let ((.cse14 (div main_~index1~0 4294967296)) (.cse15 (div main_~index2~0 4294967296))) (let ((.cse0 (* 4294967296 .cse15)) (.cse1 (* 4294967296 .cse14))) (or (and (<= (+ .cse0 main_~index1~0) (+ .cse1 main_~index2~0 1)) (<= (+ .cse1 1) main_~index1~0) (let ((.cse5 (select |#memory_int| |main_~#array~0.base|)) (.cse12 (* .cse15 (- 17179869184))) (.cse13 (* main_~index2~0 4))) (let ((.cse4 (select .cse5 (+ .cse12 .cse13 |main_~#array~0.offset|))) (.cse6 (* .cse14 (- 17179869184))) (.cse7 (* main_~index1~0 4)) (.cse2 (+ .cse1 2147483647))) (or (and (<= main_~index1~0 .cse2) (<= (let ((.cse3 (select .cse5 (+ .cse6 .cse7 |main_~#array~0.offset|)))) (+ .cse3 (* 4294967296 (div (+ (* .cse3 (- 1)) .cse4 4294967295) 4294967296)))) .cse4)) (and (let ((.cse9 (select .cse5 (+ .cse6 .cse7 |main_~#array~0.offset| (- 17179869184))))) (let ((.cse8 (+ .cse0 2147483647)) (.cse11 (* .cse9 (- 1)))) (or (and (< .cse8 main_~index2~0) (let ((.cse10 (select .cse5 (+ .cse12 .cse13 |main_~#array~0.offset| (- 17179869184))))) (<= (+ .cse9 (* 4294967296 (div (+ .cse10 .cse11 4294967295) 4294967296))) .cse10))) (and (<= main_~index2~0 .cse8) (<= (+ .cse9 (* 4294967296 (div (+ .cse4 .cse11 4294967295) 4294967296))) .cse4))))) (< .cse2 main_~index1~0))))) (<= main_~index2~0 (+ .cse0 4294967294))) (<= (+ .cse0 main_~index1~0 1) (+ .cse1 main_~index2~0))))) [2020-09-24 15:08:40,637 INFO L268 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2020-09-24 15:08:40,637 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~index2~0 4294967296)))) (and (or (<= main_~index2~0 (+ .cse0 99998)) (and (<= main_~index2~0 (+ .cse0 99999)) (= main_~loop_entered~0 0))) (<= (+ .cse0 main_~index1~0 1) (+ (* 4294967296 (div main_~index1~0 4294967296)) main_~index2~0)))) [2020-09-24 15:08:40,638 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-09-24 15:08:40,638 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 15:08:40,638 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2020-09-24 15:08:40,638 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-24 15:08:40,638 INFO L268 CegarLoopResult]: For program point L14-2(lines 12 18) no Hoare annotation was computed. [2020-09-24 15:08:40,639 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-09-24 15:08:40,639 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-24 15:08:40,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,655 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,655 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,656 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,663 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,664 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,664 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,664 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,670 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,670 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,670 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,671 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,671 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,671 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,671 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,672 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,672 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,672 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,673 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,673 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,675 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,676 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:08:40 BoogieIcfgContainer [2020-09-24 15:08:40,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:08:40,684 INFO L168 Benchmark]: Toolchain (without parser) took 37493.32 ms. Allocated memory was 139.5 MB in the beginning and 290.5 MB in the end (delta: 151.0 MB). Free memory was 102.2 MB in the beginning and 212.8 MB in the end (delta: -110.5 MB). Peak memory consumption was 157.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:40,685 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:08:40,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.06 ms. Allocated memory is still 139.5 MB. Free memory was 101.8 MB in the beginning and 91.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:40,687 INFO L168 Benchmark]: Boogie Preprocessor took 123.29 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:40,687 INFO L168 Benchmark]: RCFGBuilder took 417.53 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 161.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:40,688 INFO L168 Benchmark]: TraceAbstraction took 36605.45 ms. Allocated memory was 201.9 MB in the beginning and 290.5 MB in the end (delta: 88.6 MB). Free memory was 160.4 MB in the beginning and 212.8 MB in the end (delta: -52.4 MB). Peak memory consumption was 153.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:08:40,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.06 ms. Allocated memory is still 139.5 MB. Free memory was 101.8 MB in the beginning and 91.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.29 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.3 MB in the beginning and 179.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.53 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 161.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36605.45 ms. Allocated memory was 201.9 MB in the beginning and 290.5 MB in the end (delta: 88.6 MB). Free memory was 160.4 MB in the beginning and 212.8 MB in the end (delta: -52.4 MB). Peak memory consumption was 153.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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: 32]: Loop Invariant [2020-09-24 15:08:40,705 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,707 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,707 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,707 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,708 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((4294967296 * (index2 / 4294967296) + index1 <= 4294967296 * (index1 / 4294967296) + index2 + 1 && index2 <= 4294967296 * (index2 / 4294967296) + 99998) && 4294967296 * (index1 / 4294967296) + 1 <= index1) && (unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] + 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] || 4294967296 * (index2 / 4294967296) + index1 <= 4294967296 * (index1 / 4294967296) + index2)) || (index2 <= 4294967296 * (index2 / 4294967296) + 99999 && loop_entered == 0) - InvariantResult [Line: 43]: Loop Invariant [2020-09-24 15:08:40,709 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,709 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,709 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,710 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,711 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,717 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,717 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,718 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,719 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,719 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,719 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,719 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,720 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-24 15:08:40,720 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((4294967296 * (index2 / 4294967296) + index1 <= 4294967296 * (index1 / 4294967296) + index2 + 1 && 4294967296 * (index1 / 4294967296) + 1 <= index1) && ((index1 <= 4294967296 * (index1 / 4294967296) + 2147483647 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] + 4294967296 * ((unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array]) || (((4294967296 * (index2 / 4294967296) + 2147483647 < index2 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] + 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array + -17179869184] + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] * -1 + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array + -17179869184]) || (index2 <= 4294967296 * (index2 / 4294967296) + 2147483647 && unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] + 4294967296 * ((unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] + unknown-#memory_int-unknown[array][index1 / 4294967296 * -17179869184 + index1 * 4 + array + -17179869184] * -1 + 4294967295) / 4294967296) <= unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array])) && 4294967296 * (index1 / 4294967296) + 2147483647 < index1))) && index2 <= 4294967296 * (index2 / 4294967296) + 4294967294) || 4294967296 * (index2 / 4294967296) + index1 + 1 <= 4294967296 * (index1 / 4294967296) + index2 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 33.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 252 SDtfs, 192 SDslu, 1097 SDs, 0 SdLazy, 1233 SolverSat, 76 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 47 SyntacticMatches, 8 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 22.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=4, 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, 5 MinimizatonAttempts, 58 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 24 PreInvPairs, 34 NumberOfFragments, 963 HoareAnnotationTreeSize, 24 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 532 FormulaSimplificationTreeSizeReductionInter, 2.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 239 ConstructedInterpolants, 0 QuantifiedInterpolants, 299046 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 61/64 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...