/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/sqrt1-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:15:13,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:15:13,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:15:13,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:15:13,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:15:13,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:15:13,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:15:13,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:15:13,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:15:13,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:15:13,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:15:13,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:15:13,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:15:13,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:15:13,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:15:13,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:15:13,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:15:13,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:15:13,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:15:13,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:15:13,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:15:13,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:15:13,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:15:13,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:15:13,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:15:13,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:15:13,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:15:13,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:15:13,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:15:13,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:15:13,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:15:13,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:15:13,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:15:13,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:15:13,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:15:13,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:15:13,338 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 08:15:13,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:15:13,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:15:13,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:15:13,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:15:13,389 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:15:13,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:15:13,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:15:13,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:15:13,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:15:13,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:15:13,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:15:13,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:15:13,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:15:13,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:15:13,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:15:13,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:15:13,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:15:13,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:15:13,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:15:13,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:15:13,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:15:13,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:15:13,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:15:13,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:15:13,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:15:13,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:15:13,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:15:13,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:15:13,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:15:13,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:15:13,882 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:15:13,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-12-23 08:15:13,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d6306d53/cb25eebd17704282af94b4235a5f9711/FLAG8d5ebf6d1 [2020-12-23 08:15:14,556 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:15:14,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-12-23 08:15:14,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d6306d53/cb25eebd17704282af94b4235a5f9711/FLAG8d5ebf6d1 [2020-12-23 08:15:14,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9d6306d53/cb25eebd17704282af94b4235a5f9711 [2020-12-23 08:15:14,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:15:14,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:15:14,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:15:14,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:15:14,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:15:14,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:15:14" (1/1) ... [2020-12-23 08:15:14,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c05e83c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:14, skipping insertion in model container [2020-12-23 08:15:14,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:15:14" (1/1) ... [2020-12-23 08:15:14,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:15:14,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:15:15,076 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/sqrt1-ll_valuebound20.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 08:15:15,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:15:15,105 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:15:15,118 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/sqrt1-ll_valuebound20.c[520,533] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 08:15:15,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:15:15,141 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:15:15,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15 WrapperNode [2020-12-23 08:15:15,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:15:15,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:15:15,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:15:15,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:15:15,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:15:15,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:15:15,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:15:15,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:15:15,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (1/1) ... [2020-12-23 08:15:15,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:15:15,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:15:15,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:15:15,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:15:15,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (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 08:15:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:15:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:15:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:15:15,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:15:15,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:15:15,555 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-23 08:15:15,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:15 BoogieIcfgContainer [2020-12-23 08:15:15,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:15:15,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:15:15,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:15:15,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:15:15,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:15:14" (1/3) ... [2020-12-23 08:15:15,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f20eed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:15, skipping insertion in model container [2020-12-23 08:15:15,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:15:15" (2/3) ... [2020-12-23 08:15:15,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f20eed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:15, skipping insertion in model container [2020-12-23 08:15:15,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:15" (3/3) ... [2020-12-23 08:15:15,597 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c [2020-12-23 08:15:15,608 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:15:15,628 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 08:15:15,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 08:15:15,687 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:15:15,688 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:15:15,688 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:15:15,688 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:15:15,688 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:15:15,689 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:15:15,689 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:15:15,689 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:15:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-23 08:15:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:15:15,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:15,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:15,746 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:15,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 08:15:15,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:15,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798650238] [2020-12-23 08:15:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:15,964 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 08:15:15,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798650238] [2020-12-23 08:15:15,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:15,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:15:15,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482117437] [2020-12-23 08:15:15,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:15:15,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:15,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:15:15,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:15:15,992 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-23 08:15:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:16,016 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-12-23 08:15:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:15:16,018 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 08:15:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:16,029 INFO L225 Difference]: With dead ends: 63 [2020-12-23 08:15:16,029 INFO L226 Difference]: Without dead ends: 29 [2020-12-23 08:15:16,033 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 08:15:16,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-23 08:15:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-23 08:15:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-23 08:15:16,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-23 08:15:16,074 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-12-23 08:15:16,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:16,075 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-23 08:15:16,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:15:16,075 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-23 08:15:16,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 08:15:16,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:16,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:16,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:15:16,076 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:16,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:16,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 08:15:16,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:16,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452585155] [2020-12-23 08:15:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:16,227 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 08:15:16,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452585155] [2020-12-23 08:15:16,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:16,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 08:15:16,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943693311] [2020-12-23 08:15:16,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 08:15:16,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:16,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 08:15:16,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 08:15:16,237 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-12-23 08:15:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:16,342 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-12-23 08:15:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:15:16,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 08:15:16,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:16,344 INFO L225 Difference]: With dead ends: 54 [2020-12-23 08:15:16,344 INFO L226 Difference]: Without dead ends: 50 [2020-12-23 08:15:16,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-23 08:15:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-23 08:15:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 08:15:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-12-23 08:15:16,356 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-12-23 08:15:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:16,356 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-12-23 08:15:16,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 08:15:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-23 08:15:16,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 08:15:16,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:16,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:16,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 08:15:16,359 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:16,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-23 08:15:16,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:16,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950726756] [2020-12-23 08:15:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:16,399 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:16,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036534441] [2020-12-23 08:15:16,399 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 08:15:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:16,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 08:15:16,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:16,548 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 08:15:16,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950726756] [2020-12-23 08:15:16,549 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:16,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036534441] [2020-12-23 08:15:16,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:15:16,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 08:15:16,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172568349] [2020-12-23 08:15:16,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:16,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:16,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:16,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:16,552 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2020-12-23 08:15:16,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:16,695 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-12-23 08:15:16,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 08:15:16,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 08:15:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:16,700 INFO L225 Difference]: With dead ends: 51 [2020-12-23 08:15:16,700 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 08:15:16,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 08:15:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-12-23 08:15:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 08:15:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-12-23 08:15:16,725 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 9 [2020-12-23 08:15:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:16,726 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-12-23 08:15:16,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-12-23 08:15:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 08:15:16,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:16,727 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:16,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 08:15:16,930 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:16,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2020-12-23 08:15:16,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:16,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040694108] [2020-12-23 08:15:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:16,948 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:16,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530546509] [2020-12-23 08:15:16,949 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 08:15:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:17,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 08:15:17,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:17,113 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 08:15:17,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040694108] [2020-12-23 08:15:17,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:17,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530546509] [2020-12-23 08:15:17,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:17,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 08:15:17,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960464372] [2020-12-23 08:15:17,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:15:17,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:17,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:15:17,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:15:17,119 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-12-23 08:15:17,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:17,238 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-23 08:15:17,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:17,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 08:15:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:17,239 INFO L225 Difference]: With dead ends: 61 [2020-12-23 08:15:17,240 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 08:15:17,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:17,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 08:15:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-12-23 08:15:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 08:15:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-23 08:15:17,249 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-12-23 08:15:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:17,250 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-23 08:15:17,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:15:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-23 08:15:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 08:15:17,251 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:17,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:17,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:17,465 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:17,466 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2020-12-23 08:15:17,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:17,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584779390] [2020-12-23 08:15:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:17,481 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:17,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1101935346] [2020-12-23 08:15:17,482 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 08:15:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:17,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 08:15:17,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:17,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:17,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584779390] [2020-12-23 08:15:17,614 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:17,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101935346] [2020-12-23 08:15:17,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:17,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 08:15:17,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349786740] [2020-12-23 08:15:17,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:15:17,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:17,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:15:17,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:17,617 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2020-12-23 08:15:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:17,736 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-12-23 08:15:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:17,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-23 08:15:17,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:17,737 INFO L225 Difference]: With dead ends: 58 [2020-12-23 08:15:17,737 INFO L226 Difference]: Without dead ends: 44 [2020-12-23 08:15:17,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:17,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-23 08:15:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-23 08:15:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 08:15:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-23 08:15:17,745 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 16 [2020-12-23 08:15:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:17,745 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-23 08:15:17,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:15:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-23 08:15:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 08:15:17,746 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:17,746 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:17,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:17,962 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:17,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:17,963 INFO L82 PathProgramCache]: Analyzing trace with hash -435278385, now seen corresponding path program 2 times [2020-12-23 08:15:17,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:17,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464116893] [2020-12-23 08:15:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:17,978 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:17,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716673084] [2020-12-23 08:15:17,978 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 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 08:15:18,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:15:18,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:18,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 08:15:18,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:18,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464116893] [2020-12-23 08:15:18,077 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:18,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716673084] [2020-12-23 08:15:18,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:18,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:15:18,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684066642] [2020-12-23 08:15:18,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:18,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:18,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:18,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:18,079 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-12-23 08:15:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:18,182 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-12-23 08:15:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:15:18,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-23 08:15:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:18,183 INFO L225 Difference]: With dead ends: 68 [2020-12-23 08:15:18,184 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 08:15:18,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 08:15:18,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-12-23 08:15:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 08:15:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-12-23 08:15:18,192 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-12-23 08:15:18,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:18,192 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-12-23 08:15:18,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-12-23 08:15:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-23 08:15:18,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:18,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:18,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:18,408 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:18,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:18,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1690544526, now seen corresponding path program 2 times [2020-12-23 08:15:18,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:18,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632896820] [2020-12-23 08:15:18,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:18,422 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:18,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773947038] [2020-12-23 08:15:18,422 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 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 08:15:18,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:15:18,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:18,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 08:15:18,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:18,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632896820] [2020-12-23 08:15:18,587 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:18,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773947038] [2020-12-23 08:15:18,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:18,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 08:15:18,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228625588] [2020-12-23 08:15:18,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 08:15:18,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:18,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 08:15:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:15:18,589 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2020-12-23 08:15:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:18,695 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-12-23 08:15:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 08:15:18,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-23 08:15:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:18,696 INFO L225 Difference]: With dead ends: 64 [2020-12-23 08:15:18,697 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 08:15:18,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 08:15:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 08:15:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-12-23 08:15:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 08:15:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-12-23 08:15:18,704 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2020-12-23 08:15:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:18,705 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-12-23 08:15:18,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 08:15:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-12-23 08:15:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 08:15:18,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:18,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:18,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 08:15:18,920 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:18,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:18,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 1 times [2020-12-23 08:15:18,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:18,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554334791] [2020-12-23 08:15:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:18,933 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:18,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825264883] [2020-12-23 08:15:18,934 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 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 08:15:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:15:18,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 08:15:18,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:15:19,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554334791] [2020-12-23 08:15:19,081 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:19,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825264883] [2020-12-23 08:15:19,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:19,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:15:19,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360037874] [2020-12-23 08:15:19,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:15:19,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:19,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:15:19,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:15:19,083 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 8 states. [2020-12-23 08:15:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:19,246 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-23 08:15:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:15:19,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 08:15:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:19,247 INFO L225 Difference]: With dead ends: 61 [2020-12-23 08:15:19,247 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 08:15:19,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 08:15:19,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 08:15:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-12-23 08:15:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 08:15:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-23 08:15:19,254 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 25 [2020-12-23 08:15:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:19,254 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-23 08:15:19,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:15:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-23 08:15:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-23 08:15:19,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:19,256 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:19,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:19,469 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:19,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1559508070, now seen corresponding path program 3 times [2020-12-23 08:15:19,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:19,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654518840] [2020-12-23 08:15:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:19,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:19,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472074474] [2020-12-23 08:15:19,482 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:19,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 08:15:19,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:19,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-23 08:15:19,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-23 08:15:19,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654518840] [2020-12-23 08:15:19,636 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:19,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472074474] [2020-12-23 08:15:19,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:19,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:15:19,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380459518] [2020-12-23 08:15:19,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:15:19,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:19,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:15:19,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:15:19,638 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 6 states. [2020-12-23 08:15:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:15:19,720 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-23 08:15:19,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:15:19,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-23 08:15:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:15:19,721 INFO L225 Difference]: With dead ends: 50 [2020-12-23 08:15:19,721 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 08:15:19,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:15:19,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 08:15:19,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 08:15:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 08:15:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2020-12-23 08:15:19,728 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 28 [2020-12-23 08:15:19,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:15:19,728 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2020-12-23 08:15:19,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:15:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2020-12-23 08:15:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 08:15:19,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:15:19,729 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 08:15:19,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:19,933 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:15:19,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:15:19,934 INFO L82 PathProgramCache]: Analyzing trace with hash 256486781, now seen corresponding path program 3 times [2020-12-23 08:15:19,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:15:19,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521649495] [2020-12-23 08:15:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:15:19,945 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:15:19,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770948581] [2020-12-23 08:15:19,946 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:15:20,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 08:15:20,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:15:20,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 08:15:20,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:15:33,966 WARN L197 SmtUtils]: Spent 6.44 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-23 08:15:45,484 WARN L197 SmtUtils]: Spent 3.45 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 08:15:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 08:15:57,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521649495] [2020-12-23 08:15:57,244 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:15:57,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770948581] [2020-12-23 08:15:57,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:15:57,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 08:15:57,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736587590] [2020-12-23 08:15:57,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 08:15:57,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:15:57,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 08:15:57,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=61, Unknown=8, NotChecked=0, Total=90 [2020-12-23 08:15:57,246 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 10 states. [2020-12-23 08:16:09,503 WARN L197 SmtUtils]: Spent 12.23 s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-23 08:16:16,952 WARN L197 SmtUtils]: Spent 7.43 s on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-12-23 08:16:41,711 WARN L197 SmtUtils]: Spent 12.31 s on a formula simplification that was a NOOP. DAG size: 36 [2020-12-23 08:16:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:16:41,782 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-12-23 08:16:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:16:41,783 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-12-23 08:16:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:16:41,784 INFO L225 Difference]: With dead ends: 46 [2020-12-23 08:16:41,784 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 08:16:41,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 75.5s TimeCoverageRelationStatistics Valid=49, Invalid=122, Unknown=11, NotChecked=0, Total=182 [2020-12-23 08:16:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 08:16:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 08:16:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 08:16:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 08:16:41,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-12-23 08:16:41,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:16:41,786 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 08:16:41,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 08:16:41,786 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 08:16:41,786 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 08:16:41,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 08:16:41,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 08:17:00,627 WARN L197 SmtUtils]: Spent 18.53 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-23 08:17:14,063 WARN L197 SmtUtils]: Spent 13.43 s on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-12-23 08:17:30,654 WARN L197 SmtUtils]: Spent 16.59 s on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2020-12-23 08:17:43,522 WARN L197 SmtUtils]: Spent 12.87 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-23 08:18:04,151 WARN L197 SmtUtils]: Spent 20.63 s on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-12-23 08:18:18,381 WARN L197 SmtUtils]: Spent 14.23 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-12-23 08:18:18,383 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:18:18,384 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:18:18,384 INFO L192 CegarLoopUtils]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-12-23 08:18:18,384 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 08:18:18,384 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:18:18,384 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 08:18:18,384 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 08:18:18,384 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:18:18,384 INFO L189 CegarLoopUtils]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:18:18,385 INFO L185 CegarLoopUtils]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-12-23 08:18:18,385 INFO L189 CegarLoopUtils]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:18:18,385 INFO L189 CegarLoopUtils]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-23 08:18:18,385 INFO L185 CegarLoopUtils]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-12-23 08:18:18,386 INFO L189 CegarLoopUtils]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:18:18,386 INFO L185 CegarLoopUtils]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) [2020-12-23 08:18:18,386 INFO L189 CegarLoopUtils]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:18:18,386 INFO L185 CegarLoopUtils]: At program point L12-11(lines 11 17) the Hoare annotation is: (or (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1)))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~a~0 2) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4)) (= ULTIMATE.start_main_~s~0 9))) [2020-12-23 08:18:18,387 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 08:18:18,387 INFO L189 CegarLoopUtils]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:18:18,387 INFO L185 CegarLoopUtils]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~t~0 2))) (or (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) .cse1)) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse0 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse2 1)))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= .cse1 (+ ULTIMATE.start_main_~s~0 1)) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 4))))) [2020-12-23 08:18:18,387 INFO L189 CegarLoopUtils]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-23 08:18:18,387 INFO L192 CegarLoopUtils]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-23 08:18:18,388 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:18:18,388 INFO L189 CegarLoopUtils]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:18:18,388 INFO L189 CegarLoopUtils]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:18:18,388 INFO L189 CegarLoopUtils]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:18:18,388 INFO L189 CegarLoopUtils]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:18:18,388 INFO L189 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-23 08:18:18,388 INFO L189 CegarLoopUtils]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:18:18,388 INFO L189 CegarLoopUtils]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-23 08:18:18,389 INFO L185 CegarLoopUtils]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ .cse0 ULTIMATE.start_main_~t~0))) (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1))))) [2020-12-23 08:18:18,389 INFO L189 CegarLoopUtils]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-12-23 08:18:18,389 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-23 08:18:18,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:18:18 BoogieIcfgContainer [2020-12-23 08:18:18,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:18:18,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:18:18,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:18:18,425 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:18:18,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:15" (3/4) ... [2020-12-23 08:18:18,429 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 08:18:18,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 08:18:18,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 08:18:18,455 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 08:18:18,456 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 08:18:18,516 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c-witness.graphml [2020-12-23 08:18:18,516 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:18:18,517 INFO L168 Benchmark]: Toolchain (without parser) took 183631.16 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 126.3 MB in the beginning and 171.4 MB in the end (delta: -45.1 MB). Peak memory consumption was 102.6 MB. Max. memory is 8.0 GB. [2020-12-23 08:18:18,518 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:18:18,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 08:18:18,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:18:18,519 INFO L168 Benchmark]: Boogie Preprocessor took 24.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:18:18,520 INFO L168 Benchmark]: RCFGBuilder took 347.32 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 99.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 08:18:18,521 INFO L168 Benchmark]: TraceAbstraction took 182865.57 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 98.7 MB in the beginning and 66.0 MB in the end (delta: 32.7 MB). Peak memory consumption was 74.3 MB. Max. memory is 8.0 GB. [2020-12-23 08:18:18,521 INFO L168 Benchmark]: Witness Printer took 91.28 ms. Allocated memory is still 191.9 MB. Free memory was 66.0 MB in the beginning and 171.4 MB in the end (delta: -105.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:18:18,527 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.01 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.44 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 347.32 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 99.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 182865.57 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 98.7 MB in the beginning and 66.0 MB in the end (delta: 32.7 MB). Peak memory consumption was 74.3 MB. Max. memory is 8.0 GB. * Witness Printer took 91.28 ms. Allocated memory is still 191.9 MB. Free memory was 66.0 MB in the beginning and 171.4 MB in the end (delta: -105.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1) || (((!(0 == cond) && a == 2) && s == t + 4) && s == 9) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && s == a * a + t) || ((a == 0 && t == 1) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1) || ((!(0 == cond) && t * 2 == s + 1) && s == t + 4) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 86.3s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 45.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 96.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 192 SDtfs, 212 SDslu, 425 SDs, 0 SdLazy, 620 SolverSat, 158 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 75.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 34 NumberOfFragments, 398 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1784 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 226 FormulaSimplificationTreeSizeReductionInter, 96.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 38.0s InterpolantComputationTime, 180 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 24018 SizeOfPredicates, 52 NumberOfNonLiveVariables, 696 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 53/111 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...