/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:22:03,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:22:03,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:22:03,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:22:03,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:22:03,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:22:03,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:22:03,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:22:03,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:22:03,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:22:03,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:22:03,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:22:03,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:22:03,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:22:03,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:22:03,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:22:03,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:22:03,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:22:03,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:22:03,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:22:03,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:22:03,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:22:03,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:22:03,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:22:03,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 23:22:03,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:22:03,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:22:03,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:22:03,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:22:04,027 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:22:04,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:22:04,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:22:04,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:22:04,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:22:04,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:22:04,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:22:04,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:22:04,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:22:04,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:22:04,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:22:04,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:22:04,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:22:04,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:22:04,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:22:04,038 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:22:04,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:22:04,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:22:04,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:22:04,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:22:04,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:22:04,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:22:04,040 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 23:22:04,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:22:04,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:22:04,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:22:04,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:22:04,574 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:22:04,575 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-09-04 23:22:04,704 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35db52b38/4f13bf00fc7045a98603396b6c9a6ce3/FLAG5f13398bd [2020-09-04 23:22:05,453 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:22:05,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-09-04 23:22:05,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35db52b38/4f13bf00fc7045a98603396b6c9a6ce3/FLAG5f13398bd [2020-09-04 23:22:05,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35db52b38/4f13bf00fc7045a98603396b6c9a6ce3 [2020-09-04 23:22:05,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:22:05,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:22:05,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:22:05,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:22:05,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:22:05,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:22:05" (1/1) ... [2020-09-04 23:22:05,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f7f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:05, skipping insertion in model container [2020-09-04 23:22:05,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:22:05" (1/1) ... [2020-09-04 23:22:05,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:22:05,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:22:06,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:22:06,169 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:22:06,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:22:06,220 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:22:06,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06 WrapperNode [2020-09-04 23:22:06,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:22:06,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:22:06,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:22:06,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:22:06,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (1/1) ... [2020-09-04 23:22:06,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (1/1) ... [2020-09-04 23:22:06,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (1/1) ... [2020-09-04 23:22:06,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (1/1) ... [2020-09-04 23:22:06,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (1/1) ... [2020-09-04 23:22:06,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (1/1) ... [2020-09-04 23:22:06,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (1/1) ... [2020-09-04 23:22:06,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:22:06,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:22:06,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:22:06,385 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:22:06,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (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 [2020-09-04 23:22:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:22:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:22:06,499 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:22:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:22:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:22:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:22:06,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:22:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:22:06,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:22:06,852 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:22:06,852 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 23:22:06,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:22:06 BoogieIcfgContainer [2020-09-04 23:22:06,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:22:06,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:22:06,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:22:06,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:22:06,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:22:05" (1/3) ... [2020-09-04 23:22:06,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d875a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:22:06, skipping insertion in model container [2020-09-04 23:22:06,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:22:06" (2/3) ... [2020-09-04 23:22:06,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d875a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:22:06, skipping insertion in model container [2020-09-04 23:22:06,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:22:06" (3/3) ... [2020-09-04 23:22:06,877 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2020-09-04 23:22:06,902 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:22:06,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:22:06,942 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:22:07,029 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:22:07,030 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:22:07,030 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:22:07,030 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:22:07,030 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:22:07,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:22:07,031 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:22:07,034 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:22:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-04 23:22:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 23:22:07,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:22:07,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:22:07,083 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:22:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:22:07,093 INFO L82 PathProgramCache]: Analyzing trace with hash -869872181, now seen corresponding path program 1 times [2020-09-04 23:22:07,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:22:07,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434622480] [2020-09-04 23:22:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:22:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:22:07,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434622480] [2020-09-04 23:22:07,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:22:07,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 23:22:07,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332920517] [2020-09-04 23:22:07,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 23:22:07,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:07,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 23:22:07,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 23:22:07,528 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-09-04 23:22:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:22:07,842 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-09-04 23:22:07,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 23:22:07,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-04 23:22:07,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:22:07,873 INFO L225 Difference]: With dead ends: 83 [2020-09-04 23:22:07,873 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 23:22:07,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:22:07,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 23:22:07,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2020-09-04 23:22:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-04 23:22:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-09-04 23:22:07,993 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2020-09-04 23:22:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:22:07,994 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-09-04 23:22:07,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 23:22:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-09-04 23:22:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 23:22:07,996 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:22:07,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:22:07,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:22:07,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:22:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:22:07,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1638922607, now seen corresponding path program 1 times [2020-09-04 23:22:07,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:22:08,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134304655] [2020-09-04 23:22:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:22:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:08,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:22:08,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134304655] [2020-09-04 23:22:08,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:22:08,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 23:22:08,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241152367] [2020-09-04 23:22:08,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 23:22:08,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:08,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 23:22:08,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:22:08,577 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 7 states. [2020-09-04 23:22:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:22:15,681 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-09-04 23:22:15,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 23:22:15,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-04 23:22:15,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:22:15,683 INFO L225 Difference]: With dead ends: 94 [2020-09-04 23:22:15,683 INFO L226 Difference]: Without dead ends: 55 [2020-09-04 23:22:15,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:22:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-04 23:22:15,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-04 23:22:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-04 23:22:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-04 23:22:15,701 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 28 [2020-09-04 23:22:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:22:15,701 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-04 23:22:15,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 23:22:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-04 23:22:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 23:22:15,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:22:15,704 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-04 23:22:15,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:22:15,705 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:22:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:22:15,705 INFO L82 PathProgramCache]: Analyzing trace with hash -850084426, now seen corresponding path program 1 times [2020-09-04 23:22:15,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:22:15,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833335094] [2020-09-04 23:22:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:22:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:16,123 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 18 [2020-09-04 23:22:16,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:22:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:22:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:22:16,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833335094] [2020-09-04 23:22:16,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:22:16,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 23:22:16,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845093756] [2020-09-04 23:22:16,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 23:22:16,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:22:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 23:22:16,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:22:16,294 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 7 states. [2020-09-04 23:22:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:22:19,062 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-04 23:22:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 23:22:19,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-09-04 23:22:19,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:22:19,066 INFO L225 Difference]: With dead ends: 95 [2020-09-04 23:22:19,066 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 23:22:19,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:22:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 23:22:19,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 23:22:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 23:22:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 23:22:19,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-04 23:22:19,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:22:19,084 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 23:22:19,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 23:22:19,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 23:22:19,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 23:22:19,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:22:19,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 23:22:20,266 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:22:20,267 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_107~0 |old(~__return_107~0)|) (= ~__return_main~0 |old(~__return_main~0)|)) [2020-09-04 23:22:20,267 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-04 23:22:20,268 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:22:20,268 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-09-04 23:22:20,268 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 23:22:20,268 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 23:22:20,270 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-09-04 23:22:20,271 INFO L264 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)) 2)))) main_~main__x~0)) [2020-09-04 23:22:20,271 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 7 76) the Hoare annotation is: true [2020-09-04 23:22:20,273 INFO L264 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 23:22:20,274 INFO L264 CegarLoopResult]: At program point L52(lines 52 74) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 23:22:20,274 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 23:22:20,274 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,274 INFO L264 CegarLoopResult]: At program point L73(line 73) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,275 INFO L264 CegarLoopResult]: At program point L61(line 61) the Hoare annotation is: false [2020-09-04 23:22:20,275 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 23:22:20,276 INFO L264 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 23:22:20,276 INFO L264 CegarLoopResult]: At program point L16(lines 16 48) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,277 INFO L264 CegarLoopResult]: At program point L45(lines 8 76) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 23:22:20,277 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,277 INFO L264 CegarLoopResult]: At program point L66(line 66) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,277 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,277 INFO L264 CegarLoopResult]: At program point L62(line 62) the Hoare annotation is: false [2020-09-04 23:22:20,278 INFO L264 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 23:22:20,278 INFO L264 CegarLoopResult]: At program point L25(lines 25 47) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,278 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 23:22:20,279 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 7 76) the Hoare annotation is: true [2020-09-04 23:22:20,279 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 23:22:20,280 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 23:22:20,280 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,280 INFO L271 CegarLoopResult]: At program point L67(line 67) the Hoare annotation is: true [2020-09-04 23:22:20,280 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,281 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,281 INFO L264 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,281 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) the Hoare annotation is: false [2020-09-04 23:22:20,281 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 7 76) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,282 INFO L264 CegarLoopResult]: At program point L59(lines 59 68) the Hoare annotation is: (and (not (= main_~__tmp_1~0 0)) (= |old(~__return_107~0)| ~__return_107~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 23:22:20,282 INFO L264 CegarLoopResult]: At program point L55(line 55) the Hoare annotation is: (and (= |old(~__return_107~0)| ~__return_107~0) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse2 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse2 main_~main__x~0) 3))) (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 (div (+ .cse2 (* .cse1 (- 3)) main_~main__x~0) 4294967296)))))))) [2020-09-04 23:22:20,282 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse0 (- 4294967296)))) (let ((.cse1 (div (+ .cse3 main_~main__x~0) 3))) (let ((.cse2 (div (+ .cse3 (* .cse1 (- 3)) main_~main__x~0) 4294967296))) (and (= |old(~__return_107~0)| ~__return_107~0) (<= (+ (* 4294967296 .cse0) (* 3 .cse1) (* 4294967296 .cse2) 1) main_~main__x~0) (<= (* 1431655765 main_~main__x~0) (+ (* 6148914689804861440 .cse0) (* 4294967296 .cse1) (* 6148914689804861440 .cse2) 1431655765))))))) [2020-09-04 23:22:20,282 INFO L264 CegarLoopResult]: At program point L14(lines 14 75) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (and .cse0 (<= main_~main__x~0 (let ((.cse1 (div main_~main__x~0 4294967296))) (let ((.cse3 (* .cse1 (- 4294967296)))) (let ((.cse2 (div (+ .cse3 main_~main__x~0) 3))) (+ (* 4294967296 .cse1) (* 3 .cse2) (* 4294967296 (div (+ .cse3 (* .cse2 (- 3)) main_~main__x~0) 4294967296)))))))))) [2020-09-04 23:22:20,283 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,283 INFO L264 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,283 INFO L264 CegarLoopResult]: At program point L35(lines 35 46) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-04 23:22:20,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:22:20 BoogieIcfgContainer [2020-09-04 23:22:20,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:22:20,329 INFO L168 Benchmark]: Toolchain (without parser) took 14506.66 ms. Allocated memory was 138.4 MB in the beginning and 246.9 MB in the end (delta: 108.5 MB). Free memory was 101.4 MB in the beginning and 174.5 MB in the end (delta: -73.1 MB). Peak memory consumption was 116.5 MB. Max. memory is 7.1 GB. [2020-09-04 23:22:20,330 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 23:22:20,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.07 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:22:20,333 INFO L168 Benchmark]: Boogie Preprocessor took 161.45 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 91.3 MB in the beginning and 182.1 MB in the end (delta: -90.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:22:20,334 INFO L168 Benchmark]: RCFGBuilder took 478.45 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 168.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-04 23:22:20,335 INFO L168 Benchmark]: TraceAbstraction took 13461.63 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 167.6 MB in the beginning and 174.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. [2020-09-04 23:22:20,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 397.07 ms. Allocated memory is still 138.4 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.45 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 91.3 MB in the beginning and 182.1 MB in the end (delta: -90.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 478.45 ms. Allocated memory is still 203.4 MB. Free memory was 182.1 MB in the beginning and 168.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13461.63 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 167.6 MB in the beginning and 174.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 117.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 61]: 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: 8]: Loop Invariant Derived loop invariant: ((\old(__return_107) == __return_107 && main__y / 4294967296 <= 0) && 1 <= main__y) || (\old(__return_107) == __return_107 && main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) + 4294967296 * ((main__x / 4294967296 * -4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * -3 + main__x) / 4294967296)) - ProcedureContractResult [Line: 7]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 176 SDslu, 64 SDs, 0 SdLazy, 391 SolverSat, 13 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 44 PreInvPairs, 96 NumberOfFragments, 880 HoareAnnotationTreeSize, 44 FomulaSimplifications, 2115 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 44 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 26995 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 10/10 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...