/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:38:47,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:38:47,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:38:47,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:38:47,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:38:47,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:38:47,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:38:47,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:38:47,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:38:47,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:38:47,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:38:47,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:38:47,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:38:47,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:38:47,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:38:47,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:38:47,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:38:47,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:38:47,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:38:47,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:38:47,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:38:47,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:38:47,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:38:47,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:38:47,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:38:47,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:38:47,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:38:47,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:38:47,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:38:47,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:38:47,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:38:47,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:38:47,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:38:47,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:38:47,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:38:47,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:38:47,858 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 17:38:47,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:38:47,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:38:47,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:38:47,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:38:47,909 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:38:47,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:38:47,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:38:47,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:38:47,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:38:47,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:38:47,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:38:47,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:38:47,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:38:47,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:38:47,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:38:47,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:38:47,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:38:47,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:38:47,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:38:47,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:38:47,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:38:47,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:38:47,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:38:47,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:38:47,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:38:47,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:38:48,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:38:48,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:38:48,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:38:48,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:38:48,357 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:38:48,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c [2021-01-06 17:38:48,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3317e5374/59fcbaaf5a564b0d8587fb9199abba00/FLAGc49ebf66d [2021-01-06 17:38:48,987 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:38:48,988 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c [2021-01-06 17:38:48,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3317e5374/59fcbaaf5a564b0d8587fb9199abba00/FLAGc49ebf66d [2021-01-06 17:38:49,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/3317e5374/59fcbaaf5a564b0d8587fb9199abba00 [2021-01-06 17:38:49,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:38:49,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:38:49,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:49,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:38:49,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:38:49,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e2114b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49, skipping insertion in model container [2021-01-06 17:38:49,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:38:49,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:38:49,552 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c[546,559] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:38:49,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:49,579 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:38:49,594 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound5.c[546,559] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:38:49,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:38:49,616 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:38:49,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49 WrapperNode [2021-01-06 17:38:49,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:38:49,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:49,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:38:49,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:38:49,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:38:49,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:38:49,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:38:49,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:38:49,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (1/1) ... [2021-01-06 17:38:49,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:38:49,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:38:49,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:38:49,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:38:49,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (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 17:38:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:38:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:38:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:38:49,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:38:50,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:38:50,018 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:38:50,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:50 BoogieIcfgContainer [2021-01-06 17:38:50,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:38:50,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:38:50,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:38:50,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:38:50,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:38:49" (1/3) ... [2021-01-06 17:38:50,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d60f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:50, skipping insertion in model container [2021-01-06 17:38:50,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:38:49" (2/3) ... [2021-01-06 17:38:50,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d60f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:38:50, skipping insertion in model container [2021-01-06 17:38:50,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:50" (3/3) ... [2021-01-06 17:38:50,029 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound5.c [2021-01-06 17:38:50,037 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:38:50,043 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:38:50,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:38:50,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:38:50,125 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:38:50,125 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:38:50,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:38:50,125 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:38:50,125 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:38:50,126 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:38:50,126 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:38:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-01-06 17:38:50,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:38:50,184 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:50,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:50,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:50,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-01-06 17:38:50,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:50,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839233464] [2021-01-06 17:38:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:50,369 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 17:38:50,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839233464] [2021-01-06 17:38:50,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:50,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:38:50,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553072027] [2021-01-06 17:38:50,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:38:50,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:50,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:38:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:38:50,395 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2021-01-06 17:38:50,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:50,413 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2021-01-06 17:38:50,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:38:50,415 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:38:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:50,424 INFO L225 Difference]: With dead ends: 37 [2021-01-06 17:38:50,424 INFO L226 Difference]: Without dead ends: 16 [2021-01-06 17:38:50,427 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 17:38:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-06 17:38:50,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-01-06 17:38:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:38:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-01-06 17:38:50,472 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2021-01-06 17:38:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:50,472 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-01-06 17:38:50,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:38:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-01-06 17:38:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:38:50,473 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:50,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:50,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:38:50,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:50,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:50,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-01-06 17:38:50,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:50,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148651978] [2021-01-06 17:38:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:50,498 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:50,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868618305] [2021-01-06 17:38:50,499 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 17:38:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:50,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:38:50,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:38:50,824 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 17:38:50,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148651978] [2021-01-06 17:38:50,825 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:38:50,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868618305] [2021-01-06 17:38:50,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:38:50,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:38:50,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620479965] [2021-01-06 17:38:50,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:38:50,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:50,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:38:50,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:38:50,829 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2021-01-06 17:38:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:50,969 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-01-06 17:38:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:38:50,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:38:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:50,971 INFO L225 Difference]: With dead ends: 30 [2021-01-06 17:38:50,971 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:38:50,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:38:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:38:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-01-06 17:38:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:38:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-01-06 17:38:50,978 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-01-06 17:38:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:50,978 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-01-06 17:38:50,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:38:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-01-06 17:38:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:38:50,979 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:50,979 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:51,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:38:51,195 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:51,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:51,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1782419994, now seen corresponding path program 1 times [2021-01-06 17:38:51,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:51,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453502907] [2021-01-06 17:38:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:51,216 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:51,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930603689] [2021-01-06 17:38:51,216 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 17:38:51,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:38:51,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:38:51,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:38:51,468 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 17:38:51,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453502907] [2021-01-06 17:38:51,469 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:38:51,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930603689] [2021-01-06 17:38:51,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:38:51,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:38:51,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559611147] [2021-01-06 17:38:51,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:38:51,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:51,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:38:51,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:38:51,476 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 7 states. [2021-01-06 17:38:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:38:51,738 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-01-06 17:38:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:38:51,739 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-01-06 17:38:51,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:38:51,740 INFO L225 Difference]: With dead ends: 33 [2021-01-06 17:38:51,740 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 17:38:51,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:38:51,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 17:38:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-01-06 17:38:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:38:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-01-06 17:38:51,748 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2021-01-06 17:38:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:38:51,748 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-01-06 17:38:51,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:38:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-01-06 17:38:51,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:38:51,749 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:38:51,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:38:51,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:38:51,966 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:38:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:38:51,968 INFO L82 PathProgramCache]: Analyzing trace with hash 397544518, now seen corresponding path program 2 times [2021-01-06 17:38:51,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:38:51,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271777504] [2021-01-06 17:38:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:38:51,984 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:38:51,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368940590] [2021-01-06 17:38:51,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:38:52,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:38:52,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:38:52,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:38:52,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:38:56,203 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 24 [2021-01-06 17:38:58,374 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:38:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:38:58,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271777504] [2021-01-06 17:38:58,678 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:38:58,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368940590] [2021-01-06 17:38:58,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:38:58,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:38:58,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704157004] [2021-01-06 17:38:58,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:38:58,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:38:58,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:38:58,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2021-01-06 17:38:58,681 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 10 states. [2021-01-06 17:39:03,443 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-01-06 17:39:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:09,826 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-01-06 17:39:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:39:09,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2021-01-06 17:39:09,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:09,828 INFO L225 Difference]: With dead ends: 30 [2021-01-06 17:39:09,828 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 17:39:09,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=87, Invalid=216, Unknown=3, NotChecked=0, Total=306 [2021-01-06 17:39:09,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 17:39:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-01-06 17:39:09,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:39:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-01-06 17:39:09,836 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2021-01-06 17:39:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:09,836 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-01-06 17:39:09,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:39:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-01-06 17:39:09,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:39:09,837 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:09,838 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:10,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:10,052 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:10,053 INFO L82 PathProgramCache]: Analyzing trace with hash -561065459, now seen corresponding path program 1 times [2021-01-06 17:39:10,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:10,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639785930] [2021-01-06 17:39:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:10,077 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:10,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683847380] [2021-01-06 17:39:10,078 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 17:39:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:39:10,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:10,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639785930] [2021-01-06 17:39:10,225 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:10,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683847380] [2021-01-06 17:39:10,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:39:10,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:39:10,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094332902] [2021-01-06 17:39:10,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:39:10,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:10,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:39:10,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:39:10,227 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2021-01-06 17:39:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:10,266 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-01-06 17:39:10,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:39:10,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-01-06 17:39:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:10,267 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:39:10,267 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:39:10,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:39:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:39:10,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-01-06 17:39:10,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:39:10,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-01-06 17:39:10,274 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2021-01-06 17:39:10,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:10,275 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-01-06 17:39:10,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:39:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-01-06 17:39:10,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:39:10,276 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:10,276 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:10,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:10,490 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:10,491 INFO L82 PathProgramCache]: Analyzing trace with hash 2028801382, now seen corresponding path program 1 times [2021-01-06 17:39:10,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:10,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577078888] [2021-01-06 17:39:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:10,519 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:10,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1947476575] [2021-01-06 17:39:10,520 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 17:39:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:39:10,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:39:10,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:10,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577078888] [2021-01-06 17:39:10,698 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:10,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947476575] [2021-01-06 17:39:10,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:39:10,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:39:10,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108533664] [2021-01-06 17:39:10,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:39:10,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:10,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:39:10,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:39:10,701 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 9 states. [2021-01-06 17:39:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:19,034 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-01-06 17:39:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:39:19,035 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2021-01-06 17:39:19,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:19,036 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:39:19,036 INFO L226 Difference]: Without dead ends: 24 [2021-01-06 17:39:19,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:39:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-01-06 17:39:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-01-06 17:39:19,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:39:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-01-06 17:39:19,045 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2021-01-06 17:39:19,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:19,045 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-01-06 17:39:19,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:39:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-01-06 17:39:19,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 17:39:19,047 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:19,048 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:19,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:39:19,263 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:19,264 INFO L82 PathProgramCache]: Analyzing trace with hash -202648735, now seen corresponding path program 2 times [2021-01-06 17:39:19,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:19,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459905387] [2021-01-06 17:39:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:19,281 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:19,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280280696] [2021-01-06 17:39:19,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:19,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:39:19,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:39:19,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:39:19,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:39:19,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459905387] [2021-01-06 17:39:19,386 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:19,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280280696] [2021-01-06 17:39:19,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:39:19,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:39:19,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126831066] [2021-01-06 17:39:19,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:39:19,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:19,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:39:19,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:39:19,389 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2021-01-06 17:39:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:19,440 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-01-06 17:39:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:39:19,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-01-06 17:39:19,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:19,442 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:39:19,442 INFO L226 Difference]: Without dead ends: 28 [2021-01-06 17:39:19,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:39:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-06 17:39:19,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-01-06 17:39:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 17:39:19,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-01-06 17:39:19,451 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 23 [2021-01-06 17:39:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:19,452 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-01-06 17:39:19,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:39:19,452 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-01-06 17:39:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:39:19,453 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:39:19,453 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:39:19,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:19,667 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:39:19,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:39:19,669 INFO L82 PathProgramCache]: Analyzing trace with hash 629148341, now seen corresponding path program 3 times [2021-01-06 17:39:19,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:39:19,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761485157] [2021-01-06 17:39:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:39:19,684 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:39:19,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305578332] [2021-01-06 17:39:19,684 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 [2021-01-06 17:39:19,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:39:19,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:39:19,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:39:19,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:39:22,022 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:39:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-01-06 17:39:22,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761485157] [2021-01-06 17:39:22,048 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:39:22,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305578332] [2021-01-06 17:39:22,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:39:22,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:39:22,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157385022] [2021-01-06 17:39:22,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:39:22,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:39:22,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:39:22,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2021-01-06 17:39:22,050 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2021-01-06 17:39:31,906 WARN L197 SmtUtils]: Spent 9.74 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-01-06 17:39:42,155 WARN L197 SmtUtils]: Spent 10.23 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2021-01-06 17:39:48,221 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse1 (= c_ULTIMATE.start_main_~z~0 0))) (or (let ((.cse0 (+ c_ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod .cse0 c_ULTIMATE.start_main_~z~0) 0) (not .cse1) (let ((.cse2 (div .cse0 c_ULTIMATE.start_main_~z~0))) (= (+ (* .cse2 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (+ (* .cse2 c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~z~0))))) (and (= c_ULTIMATE.start_main_~x~0 1) .cse1))) (let ((.cse3 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse3)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse3)))) is different from false [2021-01-06 17:39:48,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:39:48,477 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-01-06 17:39:48,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:39:48,478 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-01-06 17:39:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:39:48,479 INFO L225 Difference]: With dead ends: 28 [2021-01-06 17:39:48,479 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:39:48,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=23, Invalid=35, Unknown=2, NotChecked=12, Total=72 [2021-01-06 17:39:48,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:39:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:39:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:39:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:39:48,481 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-01-06 17:39:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:39:48,481 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:39:48,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:39:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:39:48,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:39:48,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:39:48,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:39:50,965 WARN L197 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 55 DAG size of output: 34 [2021-01-06 17:39:51,063 INFO L185 CegarLoopUtils]: At program point L35-3(lines 35 45) the Hoare annotation is: (let ((.cse2 (<= 1 ULTIMATE.start_main_~k~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (<= 1 ULTIMATE.start_main_~z~0))) (or (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (<= 2 ULTIMATE.start_main_~c~0) (let ((.cse0 (div .cse1 ULTIMATE.start_main_~z~0))) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)))) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 .cse4)) (and (= ULTIMATE.start_main_~x~0 1) (<= ~counter~0 0) .cse2 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse3 .cse4))) [2021-01-06 17:39:51,064 INFO L189 CegarLoopUtils]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2021-01-06 17:39:51,064 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-01-06 17:39:51,064 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:39:51,064 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:39:51,064 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:39:51,065 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-01-06 17:39:51,065 INFO L189 CegarLoopUtils]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-01-06 17:39:51,065 INFO L185 CegarLoopUtils]: At program point L16-2(lines 38 39) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 1 ULTIMATE.start_main_~k~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= 1 ULTIMATE.start_main_~z~0))) (or (and (<= ~counter~0 1) (= ULTIMATE.start_main_~x~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) .cse2 .cse3) (and (<= 2 ULTIMATE.start_main_~c~0) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1 .cse2 .cse3))) [2021-01-06 17:39:51,065 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-01-06 17:39:51,065 INFO L189 CegarLoopUtils]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-01-06 17:39:51,065 INFO L189 CegarLoopUtils]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-01-06 17:39:51,066 INFO L192 CegarLoopUtils]: At program point L16-5(lines 15 21) the Hoare annotation is: true [2021-01-06 17:39:51,066 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:39:51,066 INFO L192 CegarLoopUtils]: At program point L50(lines 23 51) the Hoare annotation is: true [2021-01-06 17:39:51,066 INFO L189 CegarLoopUtils]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-01-06 17:39:51,066 INFO L189 CegarLoopUtils]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-01-06 17:39:51,066 INFO L189 CegarLoopUtils]: For program point L13(line 13) no Hoare annotation was computed. [2021-01-06 17:39:51,066 INFO L189 CegarLoopUtils]: For program point L13-2(line 13) no Hoare annotation was computed. [2021-01-06 17:39:51,066 INFO L189 CegarLoopUtils]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2021-01-06 17:39:51,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:39:51 BoogieIcfgContainer [2021-01-06 17:39:51,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:39:51,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:39:51,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:39:51,113 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:39:51,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:38:50" (3/4) ... [2021-01-06 17:39:51,119 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:39:51,135 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-01-06 17:39:51,135 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:39:51,135 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:39:51,136 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:39:51,185 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo1-ll_unwindbound5.c-witness.graphml [2021-01-06 17:39:51,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:39:51,187 INFO L168 Benchmark]: Toolchain (without parser) took 61819.84 ms. Allocated memory was 157.3 MB in the beginning and 197.1 MB in the end (delta: 39.8 MB). Free memory was 132.1 MB in the beginning and 102.4 MB in the end (delta: 29.8 MB). Peak memory consumption was 70.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:51,188 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:39:51,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.93 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 121.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:51,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 120.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:51,189 INFO L168 Benchmark]: Boogie Preprocessor took 23.23 ms. Allocated memory is still 157.3 MB. Free memory was 120.2 MB in the beginning and 119.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:51,191 INFO L168 Benchmark]: RCFGBuilder took 341.27 ms. Allocated memory is still 157.3 MB. Free memory was 119.0 MB in the beginning and 105.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:51,192 INFO L168 Benchmark]: TraceAbstraction took 61090.09 ms. Allocated memory was 157.3 MB in the beginning and 197.1 MB in the end (delta: 39.8 MB). Free memory was 105.5 MB in the beginning and 105.0 MB in the end (delta: 498.0 kB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:51,193 INFO L168 Benchmark]: Witness Printer took 72.99 ms. Allocated memory is still 197.1 MB. Free memory was 105.0 MB in the beginning and 102.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:39:51,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 247.93 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 121.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.56 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 120.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.23 ms. Allocated memory is still 157.3 MB. Free memory was 120.2 MB in the beginning and 119.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 341.27 ms. Allocated memory is still 157.3 MB. Free memory was 119.0 MB in the beginning and 105.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 61090.09 ms. Allocated memory was 157.3 MB in the beginning and 197.1 MB in the end (delta: 39.8 MB). Free memory was 105.5 MB in the beginning and 105.0 MB in the end (delta: 498.0 kB). Peak memory consumption was 40.5 MB. Max. memory is 8.0 GB. * Witness Printer took 72.99 ms. Allocated memory is still 197.1 MB. Free memory was 105.0 MB in the beginning and 102.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((2 <= c && (x + -1) / z * z + y == z + (x + -1) / z * z * z) && (x + -1) % z == 0) && 1 == cond) && 1 <= k) && cond == 1) && 1 <= z) || ((((((x == 1 && counter <= 0) && 1 <= k) && z == y) && 1 <= c) && cond == 1) && 1 <= z) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((counter <= 1 && x == 1) && 1 == cond) && 1 <= k) && z == y) && 1 <= c) && cond == 1) && 1 <= z) || (((((2 <= c && z * x + 1 == x + y) && 1 == cond) && 1 <= k) && cond == 1) && 1 <= z) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 58.5s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 46.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 214 SDslu, 193 SDs, 0 SdLazy, 227 SolverSat, 60 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 17.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 37.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 15 NumberOfFragments, 119 HoareAnnotationTreeSize, 4 FomulaSimplifications, 808 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 239 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 142 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 15981 SizeOfPredicates, 48 NumberOfNonLiveVariables, 684 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 36/83 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...