/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/prodbin-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:03:46,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:03:46,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:03:46,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:03:46,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:03:46,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:03:46,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:03:46,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:03:46,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:03:46,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:03:46,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:03:46,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:03:46,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:03:46,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:03:46,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:03:46,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:03:46,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:03:46,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:03:46,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:03:46,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:03:46,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:03:46,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:03:46,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:03:46,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:03:46,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:03:46,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:03:46,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:03:46,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:03:46,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:03:46,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:03:46,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:03:46,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:03:46,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:03:46,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:03:46,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:03:46,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:03:46,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 08:03:46,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:03:46,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:03:46,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:03:46,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:03:46,206 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:03:46,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:03:46,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:03:46,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:03:46,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:03:46,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:03:46,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:03:46,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:03:46,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:03:46,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:03:46,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:03:46,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:03:46,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:03:46,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:03:46,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:03:46,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:03:46,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:03:46,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:03:46,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:03:46,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:03:46,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:03:46,210 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:03:46,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:03:46,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:03:46,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:03:46,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:03:46,598 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:03:46,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c [2020-12-23 08:03:46,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c28d78b2e/7ef0bb7dc5374dc9a03ae2b944b071c3/FLAGaf6233a47 [2020-12-23 08:03:47,235 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:03:47,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound20.c [2020-12-23 08:03:47,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c28d78b2e/7ef0bb7dc5374dc9a03ae2b944b071c3/FLAGaf6233a47 [2020-12-23 08:03:47,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c28d78b2e/7ef0bb7dc5374dc9a03ae2b944b071c3 [2020-12-23 08:03:47,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:03:47,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:03:47,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:03:47,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:03:47,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:03:47,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcdd3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47, skipping insertion in model container [2020-12-23 08:03:47,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:03:47,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:03:47,765 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/prodbin-ll_valuebound20.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~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[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2020-12-23 08:03:47,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:03:47,797 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:03:47,813 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/prodbin-ll_valuebound20.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~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[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2020-12-23 08:03:47,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:03:47,839 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:03:47,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47 WrapperNode [2020-12-23 08:03:47,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:03:47,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:03:47,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:03:47,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:03:47,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:03:47,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:03:47,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:03:47,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:03:47,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (1/1) ... [2020-12-23 08:03:47,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:03:47,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:03:47,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:03:47,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:03:47,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (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 [2020-12-23 08:03:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:03:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:03:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:03:48,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:03:48,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:03:48,403 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-23 08:03:48,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:03:48 BoogieIcfgContainer [2020-12-23 08:03:48,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:03:48,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:03:48,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:03:48,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:03:48,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:03:47" (1/3) ... [2020-12-23 08:03:48,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496a18a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:03:48, skipping insertion in model container [2020-12-23 08:03:48,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:03:47" (2/3) ... [2020-12-23 08:03:48,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496a18a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:03:48, skipping insertion in model container [2020-12-23 08:03:48,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:03:48" (3/3) ... [2020-12-23 08:03:48,416 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound20.c [2020-12-23 08:03:48,423 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:03:48,436 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 08:03:48,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 08:03:48,565 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:03:48,565 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:03:48,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:03:48,568 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:03:48,568 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:03:48,569 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:03:48,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:03:48,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:03:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-23 08:03:48,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 08:03:48,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:48,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:48,595 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:48,602 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 08:03:48,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:48,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002238841] [2020-12-23 08:03:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:03:48,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:03:48,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002238841] [2020-12-23 08:03:48,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:03:48,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:03:48,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507662286] [2020-12-23 08:03:48,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:03:48,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:48,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:03:48,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:03:48,805 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-23 08:03:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:48,825 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-12-23 08:03:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:03:48,826 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 08:03:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:48,836 INFO L225 Difference]: With dead ends: 43 [2020-12-23 08:03:48,836 INFO L226 Difference]: Without dead ends: 19 [2020-12-23 08:03:48,840 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 [2020-12-23 08:03:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-23 08:03:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-23 08:03:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-23 08:03:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-23 08:03:48,877 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-12-23 08:03:48,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:48,877 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-23 08:03:48,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:03:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-23 08:03:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 08:03:48,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:48,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:48,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:03:48,879 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:48,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:48,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 08:03:48,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:48,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641912589] [2020-12-23 08:03:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:48,907 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:48,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726329420] [2020-12-23 08:03:48,907 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 [2020-12-23 08:03:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:03:48,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 08:03:48,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:03:49,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641912589] [2020-12-23 08:03:49,170 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:49,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726329420] [2020-12-23 08:03:49,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:03:49,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 08:03:49,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488458015] [2020-12-23 08:03:49,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:03:49,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:49,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:03:49,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:03:49,177 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2020-12-23 08:03:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:49,370 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-12-23 08:03:49,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:03:49,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 08:03:49,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:49,373 INFO L225 Difference]: With dead ends: 32 [2020-12-23 08:03:49,373 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 08:03:49,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:03:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 08:03:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2020-12-23 08:03:49,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-23 08:03:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-23 08:03:49,381 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2020-12-23 08:03:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:49,382 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-23 08:03:49,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:03:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-23 08:03:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 08:03:49,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:49,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:49,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 08:03:49,598 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:49,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:49,600 INFO L82 PathProgramCache]: Analyzing trace with hash -937526112, now seen corresponding path program 1 times [2020-12-23 08:03:49,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:49,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33053095] [2020-12-23 08:03:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:49,632 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:49,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082991954] [2020-12-23 08:03:49,633 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 [2020-12-23 08:03:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:03:49,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 08:03:49,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:03:49,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33053095] [2020-12-23 08:03:49,810 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:49,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082991954] [2020-12-23 08:03:49,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:03:49,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 08:03:49,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318353217] [2020-12-23 08:03:49,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:03:49,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:49,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:03:49,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:03:49,813 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-12-23 08:03:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:49,928 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-12-23 08:03:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:03:49,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 08:03:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:49,931 INFO L225 Difference]: With dead ends: 28 [2020-12-23 08:03:49,931 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 08:03:49,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:03:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 08:03:49,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-12-23 08:03:49,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 08:03:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-23 08:03:49,937 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-12-23 08:03:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:49,938 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-23 08:03:49,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:03:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-23 08:03:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 08:03:49,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:49,939 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:50,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:03:50,153 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:50,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:50,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1030171456, now seen corresponding path program 1 times [2020-12-23 08:03:50,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:50,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632029539] [2020-12-23 08:03:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:50,174 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:50,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323349999] [2020-12-23 08:03:50,175 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 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 [2020-12-23 08:03:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:03:50,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 08:03:50,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:50,515 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:03:50,543 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:03:50,562 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-23 08:03:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:03:52,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632029539] [2020-12-23 08:03:52,610 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:52,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323349999] [2020-12-23 08:03:52,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:03:52,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 08:03:52,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343594381] [2020-12-23 08:03:52,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 08:03:52,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:52,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 08:03:52,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:03:52,614 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 9 states. [2020-12-23 08:03:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:53,000 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-12-23 08:03:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 08:03:53,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-12-23 08:03:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:53,002 INFO L225 Difference]: With dead ends: 38 [2020-12-23 08:03:53,002 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 08:03:53,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-12-23 08:03:53,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 08:03:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2020-12-23 08:03:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 08:03:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-12-23 08:03:53,009 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2020-12-23 08:03:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:53,009 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-12-23 08:03:53,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 08:03:53,009 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-12-23 08:03:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 08:03:53,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:53,010 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:53,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:03:53,225 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:53,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1032018498, now seen corresponding path program 1 times [2020-12-23 08:03:53,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:53,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657210822] [2020-12-23 08:03:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:53,248 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:53,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301713852] [2020-12-23 08:03:53,249 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 [2020-12-23 08:03:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:03:53,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 08:03:53,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:53,568 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:03:53,577 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 08:03:53,585 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:03:53,592 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 08:03:53,660 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 08:03:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:03:53,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657210822] [2020-12-23 08:03:53,685 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:53,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301713852] [2020-12-23 08:03:53,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:03:53,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 08:03:53,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530898458] [2020-12-23 08:03:53,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 08:03:53,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:53,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 08:03:53,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 08:03:53,688 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 10 states. [2020-12-23 08:03:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:54,262 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-23 08:03:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 08:03:54,263 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-23 08:03:54,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:54,264 INFO L225 Difference]: With dead ends: 40 [2020-12-23 08:03:54,265 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 08:03:54,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-12-23 08:03:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 08:03:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-12-23 08:03:54,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 08:03:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-23 08:03:54,276 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 16 [2020-12-23 08:03:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:54,280 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-23 08:03:54,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 08:03:54,280 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-23 08:03:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 08:03:54,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:54,283 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:54,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:03:54,499 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:54,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1993537895, now seen corresponding path program 1 times [2020-12-23 08:03:54,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:54,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408759435] [2020-12-23 08:03:54,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:54,516 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:54,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162284649] [2020-12-23 08:03:54,516 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 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 [2020-12-23 08:03:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:03:54,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 08:03:54,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:03:55,422 WARN L197 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2020-12-23 08:03:55,431 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-12-23 08:03:55,432 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 08:03:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:03:55,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408759435] [2020-12-23 08:03:55,529 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:03:55,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162284649] [2020-12-23 08:03:55,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:03:55,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 08:03:55,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941245991] [2020-12-23 08:03:55,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 08:03:55,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:03:55,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 08:03:55,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 08:03:55,532 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 10 states. [2020-12-23 08:03:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:03:58,885 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-12-23 08:03:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 08:03:58,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-23 08:03:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:03:58,888 INFO L225 Difference]: With dead ends: 31 [2020-12-23 08:03:58,888 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 08:03:58,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2020-12-23 08:03:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 08:03:58,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-12-23 08:03:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 08:03:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-23 08:03:58,900 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-12-23 08:03:58,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:03:58,901 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-23 08:03:58,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 08:03:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-23 08:03:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 08:03:58,902 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:03:58,902 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:03:59,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 08:03:59,112 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:03:59,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:03:59,113 INFO L82 PathProgramCache]: Analyzing trace with hash -184870151, now seen corresponding path program 2 times [2020-12-23 08:03:59,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:03:59,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592944395] [2020-12-23 08:03:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:03:59,136 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:03:59,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761486353] [2020-12-23 08:03:59,138 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:03:59,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:03:59,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:03:59,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-23 08:03:59,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:04:01,311 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (* 2 c_ULTIMATE.start_main_~a~0)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~z~0) (= c_ULTIMATE.start_main_~y~0 (div (+ c_ULTIMATE.start_main_~b~0 (- 1)) 2)) (<= 1 (mod c_ULTIMATE.start_main_~b~0 2)) (let ((.cse0 (= (+ c_ULTIMATE.start_main_~z~0 (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0)) (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~b~0)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)))) (<= 1 c_ULTIMATE.start_main_~b~0)) is different from false [2020-12-23 08:04:08,175 WARN L197 SmtUtils]: Spent 4.83 s on a formula simplification that was a NOOP. DAG size: 22 [2020-12-23 08:04:14,570 WARN L197 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 08:04:22,669 WARN L197 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-12-23 08:04:28,840 WARN L197 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-12-23 08:04:28,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592944395] [2020-12-23 08:04:28,867 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:04:28,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761486353] [2020-12-23 08:04:28,868 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 08:04:28,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:04:28,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 08:04:28,868 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 08:04:28,869 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 08:04:29,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:04:29,103 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 08:04:29,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:04:29 BoogieIcfgContainer [2020-12-23 08:04:29,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:04:29,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:04:29,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:04:29,104 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:04:29,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:03:48" (3/4) ... [2020-12-23 08:04:29,107 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 08:04:29,107 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:04:29,109 INFO L168 Benchmark]: Toolchain (without parser) took 41533.97 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 149.6 MB in the beginning and 177.2 MB in the end (delta: -27.6 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:29,109 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 169.9 MB. Free memory was 141.2 MB in the beginning and 141.1 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:04:29,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.27 ms. Allocated memory is still 169.9 MB. Free memory was 149.6 MB in the beginning and 139.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:29,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 169.9 MB. Free memory was 139.3 MB in the beginning and 138.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:29,111 INFO L168 Benchmark]: Boogie Preprocessor took 26.67 ms. Allocated memory is still 169.9 MB. Free memory was 138.1 MB in the beginning and 136.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:29,112 INFO L168 Benchmark]: RCFGBuilder took 493.38 ms. Allocated memory is still 169.9 MB. Free memory was 136.6 MB in the beginning and 139.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:29,113 INFO L168 Benchmark]: TraceAbstraction took 40695.96 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 139.3 MB in the beginning and 177.7 MB in the end (delta: -38.4 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:29,114 INFO L168 Benchmark]: Witness Printer took 3.51 ms. Allocated memory is still 204.5 MB. Free memory was 177.7 MB in the beginning and 177.2 MB in the end (delta: 531.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:04:29,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 169.9 MB. Free memory was 141.2 MB in the beginning and 141.1 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.27 ms. Allocated memory is still 169.9 MB. Free memory was 149.6 MB in the beginning and 139.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.00 ms. Allocated memory is still 169.9 MB. Free memory was 139.3 MB in the beginning and 138.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.67 ms. Allocated memory is still 169.9 MB. Free memory was 138.1 MB in the beginning and 136.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 493.38 ms. Allocated memory is still 169.9 MB. Free memory was 136.6 MB in the beginning and 139.8 MB in the end (delta: -3.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 40695.96 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 139.3 MB in the beginning and 177.7 MB in the end (delta: -38.4 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. * Witness Printer took 3.51 ms. Allocated memory is still 204.5 MB. Free memory was 177.7 MB in the beginning and 177.2 MB in the end (delta: 531.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L21] int a, b; [L22] long long x, y, z; [L24] a = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L26] b = __VERIFIER_nondet_int() [L10] COND FALSE !(!cond) [L10] COND FALSE !(!cond) [L30] x = a [L31] y = b [L32] z = 0 [L34] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L36] COND FALSE !(!(y != 0)) [L39] COND TRUE y % 2 == 1 [L40] z = z + x [L41] y = y - 1 [L43] x = 2 * x [L44] y = y / 2 [L34] COND TRUE 1 [L13] COND FALSE !(!(cond)) [L36] COND FALSE !(!(y != 0)) [L39] COND TRUE y % 2 == 1 [L40] z = z + x [L41] y = y - 1 [L43] x = 2 * x [L44] y = y / 2 [L34] COND TRUE 1 [L13] COND TRUE !(cond) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 40.5s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 250 SDslu, 127 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 30 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 81 ConstructedInterpolants, 1 QuantifiedInterpolants, 9213 SizeOfPredicates, 41 NumberOfNonLiveVariables, 392 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/7 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...