/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/geo3-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:50:30,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:50:30,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:50:30,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:50:30,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:50:30,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:50:30,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:50:30,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:50:30,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:50:30,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:50:30,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:50:30,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:50:30,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:50:30,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:50:30,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:50:30,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:50:30,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:50:30,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:50:30,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:50:30,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:50:30,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:50:30,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:50:30,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:50:30,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:50:30,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:50:30,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:50:30,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:50:30,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:50:30,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:50:30,920 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:50:30,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:50:30,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:50:30,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:50:30,922 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:50:30,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:50:30,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:50:30,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:50:30,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:50:30,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:50:30,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:50:30,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:50:30,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:50:30,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:50:30,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:50:30,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:50:30,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:50:30,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:50:30,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:50:30,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:50:30,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:50:30,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:50:30,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:50:30,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:50:30,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:50:30,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:50:31,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:50:31,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:50:31,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:50:31,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:50:31,324 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:50:31,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c [2020-12-23 07:50:31,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8fb657212/13df21912a85464e969699fd8f42dd52/FLAG9b75a1c9a [2020-12-23 07:50:32,130 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:50:32,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c [2020-12-23 07:50:32,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8fb657212/13df21912a85464e969699fd8f42dd52/FLAG9b75a1c9a [2020-12-23 07:50:32,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8fb657212/13df21912a85464e969699fd8f42dd52 [2020-12-23 07:50:32,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:50:32,482 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:50:32,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:50:32,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:50:32,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:50:32,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe2e404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32, skipping insertion in model container [2020-12-23 07:50:32,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:50:32,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:50:32,684 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/geo3-ll_valuebound100.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~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[~az~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,] [2020-12-23 07:50:32,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:50:32,728 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:50:32,748 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/geo3-ll_valuebound100.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~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[~az~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,] [2020-12-23 07:50:32,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:50:32,801 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:50:32,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32 WrapperNode [2020-12-23 07:50:32,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:50:32,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:50:32,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:50:32,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:50:32,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:50:32,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:50:32,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:50:32,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:50:32,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... [2020-12-23 07:50:32,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:50:32,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:50:32,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:50:32,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:50:32,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:50:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:50:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:50:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:50:33,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:50:33,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:50:33,489 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-23 07:50:33,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:50:33 BoogieIcfgContainer [2020-12-23 07:50:33,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:50:33,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:50:33,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:50:33,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:50:33,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:50:32" (1/3) ... [2020-12-23 07:50:33,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3294c507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:50:33, skipping insertion in model container [2020-12-23 07:50:33,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:50:32" (2/3) ... [2020-12-23 07:50:33,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3294c507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:50:33, skipping insertion in model container [2020-12-23 07:50:33,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:50:33" (3/3) ... [2020-12-23 07:50:33,534 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound100.c [2020-12-23 07:50:33,544 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:50:33,552 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:50:33,593 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:50:33,653 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:50:33,653 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:50:33,653 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:50:33,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:50:33,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:50:33,654 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:50:33,654 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:50:33,654 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:50:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-23 07:50:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:50:33,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:33,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:33,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:33,683 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-23 07:50:33,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:33,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521468566] [2020-12-23 07:50:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:50:33,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521468566] [2020-12-23 07:50:33,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:50:33,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:50:33,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941195145] [2020-12-23 07:50:33,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:50:33,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:33,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:50:33,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:50:33,898 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-23 07:50:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:33,918 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-12-23 07:50:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:50:33,920 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 07:50:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:33,930 INFO L225 Difference]: With dead ends: 39 [2020-12-23 07:50:33,931 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 07:50:33,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:50:33,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 07:50:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-23 07:50:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-23 07:50:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-23 07:50:33,981 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-12-23 07:50:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:33,982 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-23 07:50:33,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:50:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-23 07:50:33,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:50:33,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:33,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:33,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:50:33,985 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:33,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-23 07:50:33,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:33,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770055025] [2020-12-23 07:50:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:34,056 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:34,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624238576] [2020-12-23 07:50:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:34,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:50:34,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:50:34,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770055025] [2020-12-23 07:50:34,546 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:34,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624238576] [2020-12-23 07:50:34,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:50:34,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:50:34,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888012260] [2020-12-23 07:50:34,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:50:34,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:34,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:50:34,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:50:34,552 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-12-23 07:50:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:34,798 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-12-23 07:50:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:50:34,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:50:34,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:34,800 INFO L225 Difference]: With dead ends: 27 [2020-12-23 07:50:34,800 INFO L226 Difference]: Without dead ends: 21 [2020-12-23 07:50:34,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:50:34,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-23 07:50:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-12-23 07:50:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 07:50:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-23 07:50:34,807 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2020-12-23 07:50:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:34,808 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-23 07:50:34,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:50:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-23 07:50:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:50:34,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:34,809 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:35,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:50:35,023 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:35,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:35,025 INFO L82 PathProgramCache]: Analyzing trace with hash -937492348, now seen corresponding path program 1 times [2020-12-23 07:50:35,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:35,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679337145] [2020-12-23 07:50:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:35,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:35,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579581417] [2020-12-23 07:50:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:35,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-23 07:50:35,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:50:35,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679337145] [2020-12-23 07:50:35,293 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:35,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579581417] [2020-12-23 07:50:35,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:50:35,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:50:35,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663516976] [2020-12-23 07:50:35,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:50:35,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:35,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:50:35,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:50:35,296 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-12-23 07:50:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:40,127 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-12-23 07:50:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:50:40,128 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-23 07:50:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:40,129 INFO L225 Difference]: With dead ends: 30 [2020-12-23 07:50:40,129 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 07:50:40,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:50:40,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 07:50:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2020-12-23 07:50:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 07:50:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-12-23 07:50:40,139 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 14 [2020-12-23 07:50:40,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:40,139 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-12-23 07:50:40,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:50:40,140 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-12-23 07:50:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:50:40,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:40,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:40,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:40,349 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:40,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:40,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1342693294, now seen corresponding path program 1 times [2020-12-23 07:50:40,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:40,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000748310] [2020-12-23 07:50:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:40,370 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:40,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1120302346] [2020-12-23 07:50:40,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:50:40,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:50:40,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:50:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 07:50:40,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000748310] [2020-12-23 07:50:40,498 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:50:40,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120302346] [2020-12-23 07:50:40,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:50:40,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:50:40,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935467475] [2020-12-23 07:50:40,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:50:40,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:50:40,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:50:40,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:50:40,500 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2020-12-23 07:50:44,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:50:44,574 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-12-23 07:50:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:50:44,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 07:50:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:50:44,576 INFO L225 Difference]: With dead ends: 22 [2020-12-23 07:50:44,576 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 07:50:44,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:50:44,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 07:50:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-23 07:50:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 07:50:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-23 07:50:44,582 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 17 [2020-12-23 07:50:44,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:50:44,582 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-23 07:50:44,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:50:44,583 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-23 07:50:44,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:50:44,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:50:44,584 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:50:44,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:44,800 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:50:44,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:50:44,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1342734009, now seen corresponding path program 2 times [2020-12-23 07:50:44,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:50:44,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589191773] [2020-12-23 07:50:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:50:44,818 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:50:44,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984124210] [2020-12-23 07:50:44,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:50:44,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:50:44,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:50:44,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:50:44,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:51:11,933 WARN L197 SmtUtils]: Spent 23.31 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 07:51:18,046 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 16 [2020-12-23 07:51:20,225 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-23 07:51:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:51:22,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589191773] [2020-12-23 07:51:22,265 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:51:22,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984124210] [2020-12-23 07:51:22,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:51:22,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:51:22,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606749684] [2020-12-23 07:51:22,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:51:22,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:51:22,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:51:22,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=49, Unknown=4, NotChecked=0, Total=72 [2020-12-23 07:51:22,268 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 9 states. [2020-12-23 07:51:40,652 WARN L197 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-23 07:51:44,726 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 07:51:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:51:46,763 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-23 07:51:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:51:46,764 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-23 07:51:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:51:46,765 INFO L225 Difference]: With dead ends: 25 [2020-12-23 07:51:46,765 INFO L226 Difference]: Without dead ends: 23 [2020-12-23 07:51:46,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=34, Invalid=91, Unknown=7, NotChecked=0, Total=132 [2020-12-23 07:51:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-23 07:51:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-12-23 07:51:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-23 07:51:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-23 07:51:46,772 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2020-12-23 07:51:46,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:51:46,772 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-23 07:51:46,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:51:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-23 07:51:46,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:51:46,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:51:46,774 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:51:46,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:51:46,978 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:51:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:51:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1931585436, now seen corresponding path program 3 times [2020-12-23 07:51:46,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:51:46,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184375608] [2020-12-23 07:51:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:51:46,995 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:51:46,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992618034] [2020-12-23 07:51:46,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true