/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/prod4br-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:55:45,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:55:45,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:55:45,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:55:45,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:55:45,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:55:45,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:55:45,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:55:45,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:55:45,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:55:45,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:55:45,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:55:45,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:55:45,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:55:45,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:55:45,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:55:45,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:55:45,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:55:45,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:55:45,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:55:45,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:55:45,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:55:45,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:55:45,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:55:45,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:55:45,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:55:45,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:55:45,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:55:45,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:55:45,798 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:55:45,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:55:45,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:55:45,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:55:45,805 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:55:45,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:55:45,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:55:45,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:55:45,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:55:45,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:55:45,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:55:45,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:55:45,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:55:45,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:55:45,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:55:45,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:55:45,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:55:45,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:55:45,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:55:45,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:55:45,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:55:45,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:55:45,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:55:45,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:55:45,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:55:45,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:55:46,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:55:46,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:55:46,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:55:46,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:55:46,230 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:55:46,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound10.c [2021-01-06 17:55:46,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dd857e2c7/4982311f0c124649bfdee42f350989be/FLAGa137f6d02 [2021-01-06 17:55:46,968 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:55:46,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound10.c [2021-01-06 17:55:46,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dd857e2c7/4982311f0c124649bfdee42f350989be/FLAGa137f6d02 [2021-01-06 17:55:47,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/dd857e2c7/4982311f0c124649bfdee42f350989be [2021-01-06 17:55:47,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:55:47,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:55:47,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:55:47,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:55:47,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:55:47,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4cc4b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47, skipping insertion in model container [2021-01-06 17:55:47,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:55:47,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:55:47,494 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/prod4br-ll_unwindbound10.c[524,537] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:55:47,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:55:47,528 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:55:47,543 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/prod4br-ll_unwindbound10.c[524,537] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:55:47,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:55:47,575 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:55:47,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47 WrapperNode [2021-01-06 17:55:47,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:55:47,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:55:47,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:55:47,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:55:47,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:55:47,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:55:47,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:55:47,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:55:47,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... [2021-01-06 17:55:47,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:55:47,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:55:47,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:55:47,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:55:47,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:55:47,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:55:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:55:47,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:55:47,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:55:48,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:55:48,080 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:55:48,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:48 BoogieIcfgContainer [2021-01-06 17:55:48,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:55:48,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:55:48,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:55:48,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:55:48,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:55:47" (1/3) ... [2021-01-06 17:55:48,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa992d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:55:48, skipping insertion in model container [2021-01-06 17:55:48,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:47" (2/3) ... [2021-01-06 17:55:48,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa992d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:55:48, skipping insertion in model container [2021-01-06 17:55:48,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:48" (3/3) ... [2021-01-06 17:55:48,093 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound10.c [2021-01-06 17:55:48,102 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:55:48,108 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-01-06 17:55:48,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-06 17:55:48,302 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:55:48,303 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:55:48,303 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:55:48,303 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:55:48,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:55:48,305 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:55:48,305 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:55:48,305 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:55:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2021-01-06 17:55:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:55:48,335 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:48,336 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:48,337 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash 120613195, now seen corresponding path program 1 times [2021-01-06 17:55:48,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:48,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955847113] [2021-01-06 17:55:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:48,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955847113] [2021-01-06 17:55:48,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:48,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:55:48,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737034605] [2021-01-06 17:55:48,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:55:48,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:48,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:55:48,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:55:48,624 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2021-01-06 17:55:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:48,646 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2021-01-06 17:55:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:55:48,648 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:55:48,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:48,675 INFO L225 Difference]: With dead ends: 47 [2021-01-06 17:55:48,675 INFO L226 Difference]: Without dead ends: 21 [2021-01-06 17:55:48,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:55:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-01-06 17:55:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-01-06 17:55:48,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-01-06 17:55:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-01-06 17:55:48,723 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2021-01-06 17:55:48,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:48,724 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-01-06 17:55:48,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:55:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-01-06 17:55:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:55:48,725 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:48,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:48,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:55:48,727 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:48,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:48,730 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-01-06 17:55:48,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:48,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420059022] [2021-01-06 17:55:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:48,784 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:48,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428926854] [2021-01-06 17:55:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:48,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:55:48,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:49,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420059022] [2021-01-06 17:55:49,004 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:49,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428926854] [2021-01-06 17:55:49,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:49,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:55:49,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201862113] [2021-01-06 17:55:49,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:55:49,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:49,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:55:49,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:55:49,018 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 6 states. [2021-01-06 17:55:49,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:49,298 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-01-06 17:55:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:55:49,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 17:55:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:49,300 INFO L225 Difference]: With dead ends: 42 [2021-01-06 17:55:49,301 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 17:55:49,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:55:49,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 17:55:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 24. [2021-01-06 17:55:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:55:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-01-06 17:55:49,310 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 8 [2021-01-06 17:55:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:49,311 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-01-06 17:55:49,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:55:49,311 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-01-06 17:55:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:55:49,312 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:49,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:49,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:55:49,527 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:49,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:49,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1182850160, now seen corresponding path program 1 times [2021-01-06 17:55:49,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:49,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929118479] [2021-01-06 17:55:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:49,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929118479] [2021-01-06 17:55:49,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:49,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:55:49,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492124684] [2021-01-06 17:55:49,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:55:49,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:49,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:55:49,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:55:49,596 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2021-01-06 17:55:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:49,631 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-01-06 17:55:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:55:49,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:55:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:49,635 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:55:49,636 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:55:49,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:55:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:55:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-01-06 17:55:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:55:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-01-06 17:55:49,651 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2021-01-06 17:55:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:49,651 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-01-06 17:55:49,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:55:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-01-06 17:55:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:55:49,652 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:49,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:49,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:55:49,653 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1415754199, now seen corresponding path program 1 times [2021-01-06 17:55:49,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:49,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845286176] [2021-01-06 17:55:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:49,667 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:49,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700269928] [2021-01-06 17:55:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:49,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:55:49,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:49,791 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:55:52,955 WARN L197 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-01-06 17:55:53,076 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:55:53,080 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:55:53,092 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:55:53,110 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:55:53,121 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:55:53,129 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:55:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:53,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845286176] [2021-01-06 17:55:53,177 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:53,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700269928] [2021-01-06 17:55:53,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:53,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:55:53,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242032172] [2021-01-06 17:55:53,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:55:53,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:53,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:55:53,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:55:53,180 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 9 states. [2021-01-06 17:55:53,345 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2021-01-06 17:55:53,596 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-01-06 17:55:53,751 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-01-06 17:55:53,907 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 20 [2021-01-06 17:56:02,575 WARN L197 SmtUtils]: Spent 8.37 s on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2021-01-06 17:56:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:56:03,784 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-01-06 17:56:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:56:03,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2021-01-06 17:56:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:56:03,786 INFO L225 Difference]: With dead ends: 52 [2021-01-06 17:56:03,786 INFO L226 Difference]: Without dead ends: 44 [2021-01-06 17:56:03,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:56:03,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-01-06 17:56:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2021-01-06 17:56:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-06 17:56:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-01-06 17:56:03,796 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 11 [2021-01-06 17:56:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:56:03,796 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-01-06 17:56:03,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:56:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-01-06 17:56:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:56:03,797 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:56:03,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:56:04,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:04,013 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:56:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:56:04,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1005087291, now seen corresponding path program 1 times [2021-01-06 17:56:04,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:56:04,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743889226] [2021-01-06 17:56:04,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:56:04,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:56:04,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727426491] [2021-01-06 17:56:04,029 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 [2021-01-06 17:56:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:56:04,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:56:04,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:56:04,325 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:56:04,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:56:04,364 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:56:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:56:06,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743889226] [2021-01-06 17:56:06,420 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:56:06,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727426491] [2021-01-06 17:56:06,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:56:06,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:56:06,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919061968] [2021-01-06 17:56:06,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:56:06,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:56:06,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:56:06,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:56:06,423 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 8 states. [2021-01-06 17:56:06,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:56:06,895 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2021-01-06 17:56:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:56:06,899 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2021-01-06 17:56:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:56:06,900 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:56:06,901 INFO L226 Difference]: Without dead ends: 54 [2021-01-06 17:56:06,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:56:06,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-01-06 17:56:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2021-01-06 17:56:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:56:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-01-06 17:56:06,910 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 13 [2021-01-06 17:56:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:56:06,910 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-01-06 17:56:06,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:56:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2021-01-06 17:56:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:56:06,911 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:56:06,912 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:56:07,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:07,119 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:56:07,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:56:07,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1092907201, now seen corresponding path program 1 times [2021-01-06 17:56:07,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:56:07,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869358446] [2021-01-06 17:56:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:56:07,135 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:56:07,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386653466] [2021-01-06 17:56:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:56:07,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:56:07,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:56:07,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:56:07,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869358446] [2021-01-06 17:56:07,251 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:56:07,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386653466] [2021-01-06 17:56:07,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:56:07,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:56:07,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84670744] [2021-01-06 17:56:07,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:56:07,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:56:07,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:56:07,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:56:07,262 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand 5 states. [2021-01-06 17:56:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:56:07,300 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2021-01-06 17:56:07,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:56:07,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:56:07,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:56:07,302 INFO L225 Difference]: With dead ends: 49 [2021-01-06 17:56:07,302 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 17:56:07,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:56:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 17:56:07,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-01-06 17:56:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-01-06 17:56:07,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-01-06 17:56:07,316 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 14 [2021-01-06 17:56:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:56:07,316 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-01-06 17:56:07,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:56:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-01-06 17:56:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:56:07,317 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:56:07,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:56:07,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:07,523 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:56:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:56:07,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1175899963, now seen corresponding path program 1 times [2021-01-06 17:56:07,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:56:07,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824224463] [2021-01-06 17:56:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:56:07,547 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:56:07,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751765771] [2021-01-06 17:56:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:56:07,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:56:07,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:56:09,861 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2021-01-06 17:56:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:56:09,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824224463] [2021-01-06 17:56:09,948 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:56:09,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751765771] [2021-01-06 17:56:09,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:56:09,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:56:09,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431055535] [2021-01-06 17:56:09,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:56:09,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:56:09,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:56:09,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:56:09,950 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 8 states. [2021-01-06 17:56:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:56:10,322 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2021-01-06 17:56:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:56:10,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-01-06 17:56:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:56:10,324 INFO L225 Difference]: With dead ends: 53 [2021-01-06 17:56:10,324 INFO L226 Difference]: Without dead ends: 51 [2021-01-06 17:56:10,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:56:10,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-06 17:56:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2021-01-06 17:56:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-06 17:56:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2021-01-06 17:56:10,332 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 14 [2021-01-06 17:56:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:56:10,333 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2021-01-06 17:56:10,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:56:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2021-01-06 17:56:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:56:10,334 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:56:10,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:56:10,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:56:10,541 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:56:10,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:56:10,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2112377150, now seen corresponding path program 1 times [2021-01-06 17:56:10,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:56:10,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943346003] [2021-01-06 17:56:10,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:56:10,555 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:56:10,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889298506] [2021-01-06 17:56:10,556 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 [2021-01-06 17:56:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:56:10,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:56:10,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:56:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:56:10,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943346003] [2021-01-06 17:56:10,790 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:56:10,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889298506] [2021-01-06 17:56:10,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:56:10,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:56:10,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7656482] [2021-01-06 17:56:10,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:56:10,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:56:10,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:56:10,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:56:10,792 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 7 states. [2021-01-06 17:56:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:56:11,282 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2021-01-06 17:56:11,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:56:11,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-01-06 17:56:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:56:11,290 INFO L225 Difference]: With dead ends: 62 [2021-01-06 17:56:11,290 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 17:56:11,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:56:11,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 17:56:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2021-01-06 17:56:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-06 17:56:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2021-01-06 17:56:11,317 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 15 [2021-01-06 17:56:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:56:11,318 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2021-01-06 17:56:11,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:56:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2021-01-06 17:56:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:56:11,319 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:56:11,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:56:11,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:11,524 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:56:11,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:56:11,525 INFO L82 PathProgramCache]: Analyzing trace with hash -2114224192, now seen corresponding path program 1 times [2021-01-06 17:56:11,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:56:11,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824428196] [2021-01-06 17:56:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:56:11,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:56:11,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580320099] [2021-01-06 17:56:11,551 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 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 [2021-01-06 17:56:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:56:11,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 36 conjunts are in the unsatisfiable core [2021-01-06 17:56:11,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:56:14,125 WARN L197 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 25 DAG size of output: 16 [2021-01-06 17:56:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:56:14,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824428196] [2021-01-06 17:56:14,279 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:56:14,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580320099] [2021-01-06 17:56:14,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:56:14,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:56:14,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445481006] [2021-01-06 17:56:14,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:56:14,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:56:14,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:56:14,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:56:14,281 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 8 states. [2021-01-06 17:56:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:56:18,963 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2021-01-06 17:56:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:56:18,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2021-01-06 17:56:18,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:56:18,965 INFO L225 Difference]: With dead ends: 73 [2021-01-06 17:56:18,965 INFO L226 Difference]: Without dead ends: 56 [2021-01-06 17:56:18,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:56:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-01-06 17:56:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2021-01-06 17:56:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:56:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2021-01-06 17:56:18,974 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 15 [2021-01-06 17:56:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:56:18,974 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2021-01-06 17:56:18,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:56:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2021-01-06 17:56:18,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:56:18,975 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:56:18,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:56:19,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:19,189 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:56:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:56:19,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1951591878, now seen corresponding path program 1 times [2021-01-06 17:56:19,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:56:19,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775853544] [2021-01-06 17:56:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:56:19,208 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:56:19,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800314410] [2021-01-06 17:56:19,208 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 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 [2021-01-06 17:56:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:56:19,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 17:56:19,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:56:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:56:19,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775853544] [2021-01-06 17:56:19,381 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:56:19,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800314410] [2021-01-06 17:56:19,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:56:19,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:56:19,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934726634] [2021-01-06 17:56:19,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:56:19,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:56:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:56:19,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:56:19,384 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 6 states. [2021-01-06 17:56:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:56:19,601 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2021-01-06 17:56:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:56:19,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-01-06 17:56:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:56:19,603 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:56:19,603 INFO L226 Difference]: Without dead ends: 79 [2021-01-06 17:56:19,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:56:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-01-06 17:56:19,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 58. [2021-01-06 17:56:19,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-06 17:56:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2021-01-06 17:56:19,614 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 16 [2021-01-06 17:56:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:56:19,614 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2021-01-06 17:56:19,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:56:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2021-01-06 17:56:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:56:19,615 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:56:19,615 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:56:19,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:56:19,829 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:56:19,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:56:19,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1461153292, now seen corresponding path program 2 times [2021-01-06 17:56:19,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:56:19,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164848732] [2021-01-06 17:56:19,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:56:19,841 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:56:19,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379739196] [2021-01-06 17:56:19,842 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:19,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:56:19,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:56:19,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 49 conjunts are in the unsatisfiable core [2021-01-06 17:56:19,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:56:22,128 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~p~0 4) (<= 1 c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~a~0 (div c_ULTIMATE.start_main_~x~0 2)) (= (mod c_ULTIMATE.start_main_~x~0 2) 0) (= c_ULTIMATE.start_main_~b~0 (div c_ULTIMATE.start_main_~y~0 2)) (= c_ULTIMATE.start_main_~q~0 0) (<= (mod c_ULTIMATE.start_main_~y~0 2) 0) (let ((.cse0 (= (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~y~0) (+ (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~b~0) c_ULTIMATE.start_main_~q~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and .cse0 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond))))) is different from false [2021-01-06 17:56:32,306 WARN L197 SmtUtils]: Spent 8.14 s on a formula simplification that was a NOOP. DAG size: 26 [2021-01-06 17:56:44,488 WARN L197 SmtUtils]: Spent 12.13 s on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2021-01-06 17:56:44,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164848732] [2021-01-06 17:56:44,517 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:56:44,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379739196] [2021-01-06 17:56:44,517 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2021-01-06 17:56:44,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:56:44,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-01-06 17:56:44,518 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-01-06 17:56:44,518 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:56:44,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:56:44,754 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-01-06 17:56:44,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:56:44 BoogieIcfgContainer [2021-01-06 17:56:44,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:56:44,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:56:44,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:56:44,755 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:56:44,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:48" (3/4) ... [2021-01-06 17:56:44,759 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 17:56:44,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:56:44,761 INFO L168 Benchmark]: Toolchain (without parser) took 57460.85 ms. Allocated memory was 159.4 MB in the beginning and 205.5 MB in the end (delta: 46.1 MB). Free memory was 134.2 MB in the beginning and 110.0 MB in the end (delta: 24.2 MB). Peak memory consumption was 71.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:56:44,761 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:56:44,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.63 ms. Allocated memory is still 159.4 MB. Free memory was 134.0 MB in the beginning and 123.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:56:44,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 159.4 MB. Free memory was 123.9 MB in the beginning and 122.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:56:44,763 INFO L168 Benchmark]: Boogie Preprocessor took 53.49 ms. Allocated memory is still 159.4 MB. Free memory was 122.3 MB in the beginning and 121.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:56:44,764 INFO L168 Benchmark]: RCFGBuilder took 401.98 ms. Allocated memory is still 159.4 MB. Free memory was 121.0 MB in the beginning and 105.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:56:44,764 INFO L168 Benchmark]: TraceAbstraction took 56670.25 ms. Allocated memory was 159.4 MB in the beginning and 205.5 MB in the end (delta: 46.1 MB). Free memory was 105.5 MB in the beginning and 110.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. [2021-01-06 17:56:44,765 INFO L168 Benchmark]: Witness Printer took 4.67 ms. Allocated memory is still 205.5 MB. Free memory is still 110.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:56:44,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.63 ms. Allocated memory is still 159.4 MB. Free memory was 134.0 MB in the beginning and 123.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.95 ms. Allocated memory is still 159.4 MB. Free memory was 123.9 MB in the beginning and 122.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.49 ms. Allocated memory is still 159.4 MB. Free memory was 122.3 MB in the beginning and 121.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 401.98 ms. Allocated memory is still 159.4 MB. Free memory was 121.0 MB in the beginning and 105.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 56670.25 ms. Allocated memory was 159.4 MB in the beginning and 205.5 MB in the end (delta: 46.1 MB). Free memory was 105.5 MB in the beginning and 110.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 42.7 MB. Max. memory is 8.0 GB. * Witness Printer took 4.67 ms. Allocated memory is still 205.5 MB. Free memory is still 110.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int counter = 0; [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L9] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L33] EXPR counter++ [L33] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(a != 0 && b != 0)) [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p [L33] EXPR counter++ [L33] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(a != 0 && b != 0)) [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p [L33] EXPR counter++ [L33] COND TRUE counter++<10 [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 56.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 17.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 641 SDslu, 416 SDs, 0 SdLazy, 567 SolverSat, 158 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 108 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 1 QuantifiedInterpolants, 13525 SizeOfPredicates, 66 NumberOfNonLiveVariables, 670 ConjunctsInSsa, 193 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 4/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...