/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:39:34,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:39:34,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:39:34,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:39:34,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:39:34,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:39:34,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:39:34,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:39:34,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:39:34,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:39:34,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:39:34,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:39:34,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:39:34,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:39:34,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:39:34,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:39:34,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:39:34,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:39:34,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:39:34,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:39:34,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:39:34,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:39:34,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:39:34,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:39:34,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:39:34,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:39:34,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:39:34,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:39:34,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:39:34,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:39:34,179 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:39:34,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:39:34,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:39:34,184 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:39:34,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:39:34,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:39:34,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:39:34,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:39:34,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:39:34,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:39:34,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:39:34,186 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:39:34,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:39:34,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:39:34,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:39:34,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:39:34,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:39:34,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:39:34,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:39:34,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:39:34,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:39:34,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:39:34,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:39:34,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:39:34,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:39:34,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:39:34,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:39:34,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:39:34,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:39:34,660 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:39:34,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2021-01-06 17:39:34,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cb06f2eb4/9e92d76e3e4b42118800b85eba02b95a/FLAG6981c7fd7 [2021-01-06 17:39:35,370 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:39:35,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2021-01-06 17:39:35,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cb06f2eb4/9e92d76e3e4b42118800b85eba02b95a/FLAG6981c7fd7 [2021-01-06 17:39:35,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cb06f2eb4/9e92d76e3e4b42118800b85eba02b95a [2021-01-06 17:39:35,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:39:35,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:39:35,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:39:35,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:39:35,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:39:35,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:39:35" (1/1) ... [2021-01-06 17:39:35,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a98d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:35, skipping insertion in model container [2021-01-06 17:39:35,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:39:35" (1/1) ... [2021-01-06 17:39:35,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:39:35,820 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:39:35,992 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:39:36,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:39:36,024 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:39:36,038 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c[546,559] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:39:36,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:39:36,064 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:39:36,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36 WrapperNode [2021-01-06 17:39:36,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:39:36,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:39:36,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:39:36,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:39:36,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:39:36,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:39:36,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:39:36,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:39:36,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... [2021-01-06 17:39:36,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:39:36,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:39:36,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:39:36,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:39:36,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:39:36,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:39:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:39:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:39:36,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:39:36,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:39:36,536 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-01-06 17:39:36,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:39:36 BoogieIcfgContainer [2021-01-06 17:39:36,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:39:36,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:39:36,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:39:36,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:39:36,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:39:35" (1/3) ... [2021-01-06 17:39:36,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d04c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:39:36, skipping insertion in model container [2021-01-06 17:39:36,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:39:36" (2/3) ... [2021-01-06 17:39:36,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d04c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:39:36, skipping insertion in model container [2021-01-06 17:39:36,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:39:36" (3/3) ... [2021-01-06 17:39:36,561 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.c [2021-01-06 17:39:36,575 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:39:36,600 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:39:36,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:39:36,681 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:39:36,682 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:39:36,682 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:39:36,682 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:39:36,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:39:36,684 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:39:36,687 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:39:36,687 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:39:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-06 17:39:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:39:36,709 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:36,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:36,711 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:36,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:36,717 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-01-06 17:39:36,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:36,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169584478] [2021-01-06 17:39:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:36,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169584478] [2021-01-06 17:39:36,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:39:36,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:39:36,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400166356] [2021-01-06 17:39:36,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:39:36,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:36,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:39:36,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:39:36,921 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-01-06 17:39:36,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:36,941 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2021-01-06 17:39:36,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:39:36,943 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2021-01-06 17:39:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:36,953 INFO L225 Difference]: With dead ends: 43 [2021-01-06 17:39:36,953 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:39:36,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:39:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:39:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 17:39:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 17:39:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-01-06 17:39:36,997 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2021-01-06 17:39:36,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:36,997 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-01-06 17:39:36,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:39:36,998 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-01-06 17:39:36,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:39:36,999 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:36,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:36,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:39:37,000 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-01-06 17:39:37,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:37,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406509172] [2021-01-06 17:39:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:37,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:37,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719386645] [2021-01-06 17:39:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:37,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:39:37,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:37,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:37,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406509172] [2021-01-06 17:39:37,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:37,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719386645] [2021-01-06 17:39:37,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:39:37,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:39:37,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932941709] [2021-01-06 17:39:37,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:39:37,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:37,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:39:37,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:39:37,361 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2021-01-06 17:39:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:37,592 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-01-06 17:39:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:39:37,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2021-01-06 17:39:37,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:37,595 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:39:37,595 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:39:37,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:39:37,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:39:37,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-01-06 17:39:37,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:39:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-01-06 17:39:37,603 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-01-06 17:39:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:37,604 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-01-06 17:39:37,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:39:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-01-06 17:39:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:39:37,605 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:37,605 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:37,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:39:37,821 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:37,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2131965670, now seen corresponding path program 1 times [2021-01-06 17:39:37,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:37,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094002824] [2021-01-06 17:39:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:37,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:37,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054702940] [2021-01-06 17:39:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:37,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:39:37,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:38,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:38,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094002824] [2021-01-06 17:39:38,183 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:38,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054702940] [2021-01-06 17:39:38,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:39:38,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:39:38,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322632288] [2021-01-06 17:39:38,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:39:38,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:38,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:39:38,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:39:38,186 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2021-01-06 17:39:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:38,655 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-01-06 17:39:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:39:38,656 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2021-01-06 17:39:38,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:38,657 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:39:38,657 INFO L226 Difference]: Without dead ends: 26 [2021-01-06 17:39:38,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:39:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-06 17:39:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-01-06 17:39:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 17:39:38,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-01-06 17:39:38,664 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 16 [2021-01-06 17:39:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:38,664 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-01-06 17:39:38,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:39:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-01-06 17:39:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:39:38,665 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:38,666 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:38,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:38,880 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:38,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:38,881 INFO L82 PathProgramCache]: Analyzing trace with hash -582143938, now seen corresponding path program 2 times [2021-01-06 17:39:38,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:38,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089097160] [2021-01-06 17:39:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:38,900 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:38,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922515798] [2021-01-06 17:39:38,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:38,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:39:38,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:39:38,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:39:38,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:43,184 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 26 DAG size of output: 16 [2021-01-06 17:39:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:43,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089097160] [2021-01-06 17:39:43,257 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:43,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922515798] [2021-01-06 17:39:43,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:39:43,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:39:43,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91266937] [2021-01-06 17:39:43,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:39:43,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:43,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:39:43,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:39:43,260 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2021-01-06 17:40:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:40:00,047 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-01-06 17:40:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:40:00,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2021-01-06 17:40:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:40:00,050 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:40:00,050 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 17:40:00,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:40:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 17:40:00,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-01-06 17:40:00,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 17:40:00,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-01-06 17:40:00,058 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 19 [2021-01-06 17:40:00,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:40:00,059 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-01-06 17:40:00,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:40:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-01-06 17:40:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:40:00,060 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:00,060 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:40:00,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:40:00,275 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:00,276 INFO L82 PathProgramCache]: Analyzing trace with hash 432797915, now seen corresponding path program 1 times [2021-01-06 17:40:00,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:00,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978796243] [2021-01-06 17:40:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:00,322 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:00,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809972043] [2021-01-06 17:40:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:40:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:40:00,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:40:00,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:40:00,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978796243] [2021-01-06 17:40:00,549 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:40:00,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809972043] [2021-01-06 17:40:00,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:40:00,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:40:00,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061082681] [2021-01-06 17:40:00,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:40:00,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:00,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:40:00,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:40:00,552 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2021-01-06 17:40:08,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:40:08,913 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-01-06 17:40:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:40:08,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2021-01-06 17:40:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:40:08,914 INFO L225 Difference]: With dead ends: 27 [2021-01-06 17:40:08,915 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:40:08,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:40:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:40:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-01-06 17:40:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-01-06 17:40:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-01-06 17:40:08,921 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2021-01-06 17:40:08,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:40:08,922 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-01-06 17:40:08,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:40:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-01-06 17:40:08,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:40:08,923 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:40:08,923 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:40:09,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:40:09,126 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:40:09,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:40:09,127 INFO L82 PathProgramCache]: Analyzing trace with hash 432838630, now seen corresponding path program 3 times [2021-01-06 17:40:09,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:40:09,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425538022] [2021-01-06 17:40:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:40:09,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:40:09,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920666800] [2021-01-06 17:40:09,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:40:09,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:40:09,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:40:09,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:40:09,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:40:09,940 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:40:14,772 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:40:18,834 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:40:18,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425538022] [2021-01-06 17:40:18,835 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:40:18,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920666800] [2021-01-06 17:40:18,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:40:18,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:40:18,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552059259] [2021-01-06 17:40:18,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:40:18,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:40:18,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:40:18,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:40:18,837 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2021-01-06 17:40:19,265 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-01-06 17:40:28,895 WARN L197 SmtUtils]: Spent 3.20 s on a formula simplification that was a NOOP. DAG size: 36 [2021-01-06 17:41:35,412 WARN L197 SmtUtils]: Spent 1.00 m on a formula simplification that was a NOOP. DAG size: 43 [2021-01-06 17:42:02,978 WARN L197 SmtUtils]: Spent 24.30 s on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2021-01-06 17:42:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:42:04,997 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-01-06 17:42:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:42:05,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-06 17:42:05,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:42:05,007 INFO L225 Difference]: With dead ends: 23 [2021-01-06 17:42:05,007 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:42:05,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 98.4s TimeCoverageRelationStatistics Valid=42, Invalid=64, Unknown=4, NotChecked=0, Total=110 [2021-01-06 17:42:05,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:42:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:42:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:42:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:42:05,008 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-01-06 17:42:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:42:05,009 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:42:05,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:42:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:42:05,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:42:05,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:42:05,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:42:07,581 WARN L197 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-01-06 17:42:10,337 WARN L197 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2021-01-06 17:42:10,340 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-01-06 17:42:10,341 INFO L185 CegarLoopUtils]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (<= 1 ULTIMATE.start_main_~k~0)) (.cse2 (<= ULTIMATE.start_main_~z~0 5)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse2 .cse3) (let ((.cse5 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse4 (div .cse5 ULTIMATE.start_main_~z~0))) (and .cse0 (<= 2 ULTIMATE.start_main_~c~0) (= (+ (* .cse4 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse4 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0))) (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse4) (* .cse4 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) .cse1 (not (= ULTIMATE.start_main_~z~0 0)) .cse2 .cse3))))) [2021-01-06 17:42:10,341 INFO L189 CegarLoopUtils]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2021-01-06 17:42:10,342 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:42:10,342 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:42:10,342 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:42:10,342 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-01-06 17:42:10,342 INFO L189 CegarLoopUtils]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-01-06 17:42:10,343 INFO L185 CegarLoopUtils]: At program point L16-2(lines 39 40) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~k~0)) (.cse4 (<= ULTIMATE.start_main_~z~0 5)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (let ((.cse1 (div (+ ULTIMATE.start_main_~x~0 (- 1)) ULTIMATE.start_main_~z~0))) (and .cse0 (<= 2 ULTIMATE.start_main_~c~0) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse1 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) .cse2 .cse3 (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse1) (* .cse1 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) .cse4 .cse5)) (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse2 .cse3 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse4 .cse5))) [2021-01-06 17:42:10,343 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-01-06 17:42:10,343 INFO L189 CegarLoopUtils]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-01-06 17:42:10,343 INFO L189 CegarLoopUtils]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-01-06 17:42:10,343 INFO L192 CegarLoopUtils]: At program point L16-5(lines 15 21) the Hoare annotation is: true [2021-01-06 17:42:10,343 INFO L189 CegarLoopUtils]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2021-01-06 17:42:10,343 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2021-01-06 17:42:10,343 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:42:10,344 INFO L189 CegarLoopUtils]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-01-06 17:42:10,344 INFO L189 CegarLoopUtils]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-01-06 17:42:10,344 INFO L189 CegarLoopUtils]: For program point L13(line 13) no Hoare annotation was computed. [2021-01-06 17:42:10,344 INFO L189 CegarLoopUtils]: For program point L13-2(line 13) no Hoare annotation was computed. [2021-01-06 17:42:10,344 INFO L189 CegarLoopUtils]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-01-06 17:42:10,344 INFO L189 CegarLoopUtils]: For program point L13-6(line 13) no Hoare annotation was computed. [2021-01-06 17:42:10,344 INFO L192 CegarLoopUtils]: At program point L51(lines 22 52) the Hoare annotation is: true [2021-01-06 17:42:10,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:42:10 BoogieIcfgContainer [2021-01-06 17:42:10,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:42:10,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:42:10,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:42:10,367 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:42:10,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:39:36" (3/4) ... [2021-01-06 17:42:10,371 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:42:10,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-01-06 17:42:10,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:42:10,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:42:10,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:42:10,440 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo1-ll_valuebound5.c-witness.graphml [2021-01-06 17:42:10,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:42:10,442 INFO L168 Benchmark]: Toolchain (without parser) took 154662.84 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 126.4 MB in the beginning and 89.7 MB in the end (delta: 36.7 MB). Peak memory consumption was 82.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:42:10,442 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:42:10,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:42:10,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:42:10,444 INFO L168 Benchmark]: Boogie Preprocessor took 24.01 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:42:10,445 INFO L168 Benchmark]: RCFGBuilder took 409.74 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 133.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:42:10,449 INFO L168 Benchmark]: TraceAbstraction took 153820.16 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 133.3 MB in the beginning and 92.3 MB in the end (delta: 40.9 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:42:10,449 INFO L168 Benchmark]: Witness Printer took 74.20 ms. Allocated memory is still 196.1 MB. Free memory was 92.3 MB in the beginning and 89.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:42:10,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.7 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.94 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.01 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 409.74 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 133.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 153820.16 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 133.3 MB in the beginning and 92.3 MB in the end (delta: 40.9 MB). Peak memory consumption was 86.0 MB. Max. memory is 8.0 GB. * Witness Printer took 74.20 ms. Allocated memory is still 196.1 MB. Free memory was 92.3 MB in the beginning and 89.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((0 <= z && x == 1) && 1 <= k) && z == y) && 1 <= c) && z <= 5) && cond == 1) || (((((((((0 <= z && 2 <= c) && (x + -1) / z * z + y == z + (x + -1) / z * z * z) && (x + -1) % z == 0) && 1 == cond) && (z * ((x + -1) / z) + (x + -1) / z * -1 + 1) % z == 0) && 1 <= k) && !(z == 0)) && z <= 5) && cond == 1) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((0 <= z && 2 <= c) && (x + -1) / z * z + y == z + (x + -1) / z * z * z) && z * x + 1 == x + y) && 1 == cond) && 1 <= k) && (z * ((x + -1) / z) + (x + -1) / z * -1 + 1) % z == 0) && z <= 5) && cond == 1) || (((((((0 <= z && x == 1) && 1 == cond) && 1 <= k) && z == y) && 1 <= c) && z <= 5) && cond == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 148.5s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 132.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 129 SDslu, 160 SDs, 0 SdLazy, 199 SolverSat, 53 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 32.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 103.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 189 HoareAnnotationTreeSize, 4 FomulaSimplifications, 239 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 407 FormulaSimplificationTreeSizeReductionInter, 5.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 105 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 10830 SizeOfPredicates, 43 NumberOfNonLiveVariables, 452 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 16/33 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...