/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/hard-u_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:53:55,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:53:55,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:53:55,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:53:55,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:53:55,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:53:55,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:53:55,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:53:55,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:53:55,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:53:55,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:53:55,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:53:55,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:53:55,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:53:55,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:53:55,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:53:55,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:53:55,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:53:55,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:53:55,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:53:55,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:53:55,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:53:55,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:53:55,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:53:55,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:53:55,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:53:55,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:53:55,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:53:55,975 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 07:53:56,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:53:56,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:53:56,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:53:56,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:53:56,031 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:53:56,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:53:56,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:53:56,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:53:56,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:53:56,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:53:56,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:53:56,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:53:56,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:53:56,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:53:56,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:53:56,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:53:56,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:53:56,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:53:56,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:53:56,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:53:56,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:53:56,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:53:56,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:53:56,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:53:56,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:53:56,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:53:56,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:53:56,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:53:56,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:53:56,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:53:56,507 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:53:56,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2020-12-23 07:53:56,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df791fc8f/fd4c53bc0a1840d18a9040d8d3c2f869/FLAGcef7fd324 [2020-12-23 07:53:57,279 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:53:57,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2020-12-23 07:53:57,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df791fc8f/fd4c53bc0a1840d18a9040d8d3c2f869/FLAGcef7fd324 [2020-12-23 07:53:57,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/df791fc8f/fd4c53bc0a1840d18a9040d8d3c2f869 [2020-12-23 07:53:57,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:53:57,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:53:57,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:53:57,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:53:57,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:53:57,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5326affb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57, skipping insertion in model container [2020-12-23 07:53:57,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:53:57,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:53:57,496 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/hard-u_unwindbound1.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:53:57,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:53:57,540 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:53:57,555 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/hard-u_unwindbound1.c[537,550] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2020-12-23 07:53:57,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:53:57,582 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:53:57,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57 WrapperNode [2020-12-23 07:53:57,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:53:57,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:53:57,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:53:57,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:53:57,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:53:57,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:53:57,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:53:57,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:53:57,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (1/1) ... [2020-12-23 07:53:57,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:53:57,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:53:57,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:53:57,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:53:57,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (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 07:53:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:53:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:53:57,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:53:57,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:53:58,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:53:58,170 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-23 07:53:58,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:53:58 BoogieIcfgContainer [2020-12-23 07:53:58,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:53:58,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:53:58,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:53:58,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:53:58,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:53:57" (1/3) ... [2020-12-23 07:53:58,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa88773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:53:58, skipping insertion in model container [2020-12-23 07:53:58,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:53:57" (2/3) ... [2020-12-23 07:53:58,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa88773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:53:58, skipping insertion in model container [2020-12-23 07:53:58,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:53:58" (3/3) ... [2020-12-23 07:53:58,183 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound1.c [2020-12-23 07:53:58,191 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:53:58,202 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:53:58,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:53:58,307 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:53:58,307 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:53:58,308 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:53:58,308 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:53:58,310 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:53:58,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:53:58,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:53:58,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:53:58,333 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-23 07:53:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:53:58,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:58,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:58,344 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:58,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:58,352 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-12-23 07:53:58,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:58,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547452857] [2020-12-23 07:53:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:53:58,600 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 07:53:58,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547452857] [2020-12-23 07:53:58,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:58,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:53:58,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602934055] [2020-12-23 07:53:58,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:53:58,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:58,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:53:58,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:53:58,635 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-23 07:53:58,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:58,668 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-12-23 07:53:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:53:58,669 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 07:53:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:58,696 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:53:58,697 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:53:58,704 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 07:53:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:53:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:53:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:53:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:53:58,755 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-12-23 07:53:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:58,755 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:53:58,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:53:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:53:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:53:58,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:58,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:58,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:53:58,761 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:58,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:58,764 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-23 07:53:58,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:58,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899180873] [2020-12-23 07:53:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:53:58,917 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 07:53:58,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899180873] [2020-12-23 07:53:58,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:58,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:53:58,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944216303] [2020-12-23 07:53:58,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:53:58,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:58,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:53:58,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:53:58,921 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:53:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:59,051 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-12-23 07:53:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:53:59,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-23 07:53:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:59,054 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:53:59,054 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:53:59,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:53:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:53:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-12-23 07:53:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:53:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:53:59,064 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-23 07:53:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:59,064 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:53:59,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:53:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:53:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:53:59,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:59,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:59,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:53:59,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1986071569, now seen corresponding path program 1 times [2020-12-23 07:53:59,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:59,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403334385] [2020-12-23 07:53:59,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:53:59,110 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 07:53:59,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403334385] [2020-12-23 07:53:59,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:59,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:53:59,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244325412] [2020-12-23 07:53:59,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:53:59,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:59,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:53:59,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:53:59,113 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-23 07:53:59,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:59,152 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-12-23 07:53:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:53:59,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:53:59,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:59,155 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:53:59,156 INFO L226 Difference]: Without dead ends: 37 [2020-12-23 07:53:59,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:53:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-23 07:53:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-23 07:53:59,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 07:53:59,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-12-23 07:53:59,171 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-12-23 07:53:59,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:59,173 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-12-23 07:53:59,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:53:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-12-23 07:53:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:53:59,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:59,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:59,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:53:59,175 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:59,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1985334737, now seen corresponding path program 1 times [2020-12-23 07:53:59,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:59,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511401549] [2020-12-23 07:53:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:53:59,267 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 07:53:59,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511401549] [2020-12-23 07:53:59,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:59,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:53:59,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662789206] [2020-12-23 07:53:59,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:53:59,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:59,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:53:59,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:53:59,271 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-12-23 07:53:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:53:59,465 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-12-23 07:53:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:53:59,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:53:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:53:59,468 INFO L225 Difference]: With dead ends: 56 [2020-12-23 07:53:59,468 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 07:53:59,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:53:59,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 07:53:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-23 07:53:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 07:53:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-23 07:53:59,486 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-12-23 07:53:59,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:53:59,486 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-23 07:53:59,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:53:59,487 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-23 07:53:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:53:59,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:53:59,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:53:59,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 07:53:59,492 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:53:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:53:59,493 INFO L82 PathProgramCache]: Analyzing trace with hash -941046702, now seen corresponding path program 1 times [2020-12-23 07:53:59,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:53:59,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300994954] [2020-12-23 07:53:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:53:59,539 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:53:59,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668279965] [2020-12-23 07:53:59,540 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 07:53:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:53:59,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:53:59,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:53:59,860 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 07:53:59,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300994954] [2020-12-23 07:53:59,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:53:59,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668279965] [2020-12-23 07:53:59,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:53:59,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:53:59,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959533427] [2020-12-23 07:53:59,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:53:59,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:53:59,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:53:59,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:53:59,869 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-12-23 07:54:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:00,359 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-12-23 07:54:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:54:00,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 07:54:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:00,362 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:54:00,362 INFO L226 Difference]: Without dead ends: 58 [2020-12-23 07:54:00,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:54:00,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-23 07:54:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-12-23 07:54:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:54:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-12-23 07:54:00,374 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-12-23 07:54:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:00,374 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-12-23 07:54:00,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:54:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-12-23 07:54:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:54:00,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:00,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:00,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:00,592 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:00,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1803611644, now seen corresponding path program 1 times [2020-12-23 07:54:00,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:00,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771122803] [2020-12-23 07:54:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:00,618 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:00,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619844787] [2020-12-23 07:54:00,619 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 07:54:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:00,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:54:00,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:00,786 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 07:54:00,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771122803] [2020-12-23 07:54:00,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:00,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619844787] [2020-12-23 07:54:00,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:00,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:54:00,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45491695] [2020-12-23 07:54:00,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:54:00,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:00,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:54:00,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:00,790 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 5 states. [2020-12-23 07:54:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:00,828 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-12-23 07:54:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:00,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-23 07:54:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:00,830 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:54:00,831 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 07:54:00,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 07:54:00,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-23 07:54:00,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 07:54:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-12-23 07:54:00,838 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2020-12-23 07:54:00,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:00,839 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-12-23 07:54:00,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:54:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-12-23 07:54:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:54:00,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:00,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:01,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:01,056 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:01,057 INFO L82 PathProgramCache]: Analyzing trace with hash 77359410, now seen corresponding path program 1 times [2020-12-23 07:54:01,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:01,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401450684] [2020-12-23 07:54:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:01,081 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:01,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857570880] [2020-12-23 07:54:01,084 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 07:54:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:01,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:54:01,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:01,335 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 07:54:01,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401450684] [2020-12-23 07:54:01,336 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:01,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857570880] [2020-12-23 07:54:01,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:54:01,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:54:01,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883622398] [2020-12-23 07:54:01,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:54:01,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:01,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:54:01,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:01,339 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 7 states. [2020-12-23 07:54:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:01,707 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-12-23 07:54:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:54:01,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-12-23 07:54:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:01,708 INFO L225 Difference]: With dead ends: 38 [2020-12-23 07:54:01,708 INFO L226 Difference]: Without dead ends: 32 [2020-12-23 07:54:01,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:54:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-23 07:54:01,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-23 07:54:01,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-23 07:54:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-12-23 07:54:01,715 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 17 [2020-12-23 07:54:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:01,716 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-12-23 07:54:01,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-12-23 07:54:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:54:01,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:01,717 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:01,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:01,932 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:01,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1461320627, now seen corresponding path program 1 times [2020-12-23 07:54:01,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:01,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834397744] [2020-12-23 07:54:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:01,948 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:01,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725707689] [2020-12-23 07:54:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:54:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:02,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:54:02,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:02,170 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 07:54:02,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834397744] [2020-12-23 07:54:02,170 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:02,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725707689] [2020-12-23 07:54:02,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:02,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:54:02,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108875924] [2020-12-23 07:54:02,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:54:02,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:02,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:54:02,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:54:02,173 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 7 states. [2020-12-23 07:54:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:02,583 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-12-23 07:54:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:54:02,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-23 07:54:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:02,584 INFO L225 Difference]: With dead ends: 40 [2020-12-23 07:54:02,584 INFO L226 Difference]: Without dead ends: 38 [2020-12-23 07:54:02,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:54:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-23 07:54:02,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2020-12-23 07:54:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 07:54:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-12-23 07:54:02,598 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 19 [2020-12-23 07:54:02,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:02,599 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-12-23 07:54:02,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:54:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-12-23 07:54:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:54:02,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:02,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:02,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:02,814 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:02,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1642186908, now seen corresponding path program 1 times [2020-12-23 07:54:02,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:02,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839788201] [2020-12-23 07:54:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:02,828 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:02,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551843] [2020-12-23 07:54:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:54:02,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:54:02,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:54:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:54:02,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839788201] [2020-12-23 07:54:02,941 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:54:02,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551843] [2020-12-23 07:54:02,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:54:02,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 07:54:02,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762055872] [2020-12-23 07:54:02,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:54:02,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:54:02,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:54:02,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:54:02,949 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2020-12-23 07:54:02,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:54:02,971 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-12-23 07:54:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:54:02,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-23 07:54:02,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:54:02,974 INFO L225 Difference]: With dead ends: 40 [2020-12-23 07:54:02,974 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 07:54:02,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:54:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 07:54:02,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-23 07:54:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 07:54:02,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-12-23 07:54:02,985 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2020-12-23 07:54:02,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:54:02,986 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-12-23 07:54:02,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:54:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-12-23 07:54:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:54:02,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:54:02,986 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:54:03,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:03,188 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:54:03,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:54:03,189 INFO L82 PathProgramCache]: Analyzing trace with hash 125341744, now seen corresponding path program 1 times [2020-12-23 07:54:03,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:54:03,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980425074] [2020-12-23 07:54:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:54:03,201 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:54:03,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005306546] [2020-12-23 07:54:03,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:03,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:54:03,261 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:54:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 07:54:03,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 07:54:03,322 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 07:54:03,323 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:54:03,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:54:03,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:54:03 BoogieIcfgContainer [2020-12-23 07:54:03,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:54:03,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:54:03,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:54:03,580 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:54:03,581 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:53:58" (3/4) ... [2020-12-23 07:54:03,585 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 07:54:03,668 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard-u_unwindbound1.c-witness.graphml [2020-12-23 07:54:03,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:54:03,670 INFO L168 Benchmark]: Toolchain (without parser) took 6360.11 ms. Allocated memory was 164.6 MB in the beginning and 228.6 MB in the end (delta: 64.0 MB). Free memory was 140.2 MB in the beginning and 171.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:03,671 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 138.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:54:03,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.08 ms. Allocated memory is still 164.6 MB. Free memory was 140.2 MB in the beginning and 129.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:03,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.94 ms. Allocated memory is still 164.6 MB. Free memory was 129.4 MB in the beginning and 127.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:03,672 INFO L168 Benchmark]: Boogie Preprocessor took 30.88 ms. Allocated memory is still 164.6 MB. Free memory was 127.6 MB in the beginning and 126.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:03,673 INFO L168 Benchmark]: RCFGBuilder took 511.10 ms. Allocated memory is still 164.6 MB. Free memory was 126.6 MB in the beginning and 109.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:03,674 INFO L168 Benchmark]: TraceAbstraction took 5405.73 ms. Allocated memory was 164.6 MB in the beginning and 228.6 MB in the end (delta: 64.0 MB). Free memory was 109.2 MB in the beginning and 174.0 MB in the end (delta: -64.9 MB). Peak memory consumption was 547.8 kB. Max. memory is 8.0 GB. [2020-12-23 07:54:03,674 INFO L168 Benchmark]: Witness Printer took 87.79 ms. Allocated memory is still 228.6 MB. Free memory was 174.0 MB in the beginning and 171.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:54:03,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 138.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.08 ms. Allocated memory is still 164.6 MB. Free memory was 140.2 MB in the beginning and 129.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 44.94 ms. Allocated memory is still 164.6 MB. Free memory was 129.4 MB in the beginning and 127.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.88 ms. Allocated memory is still 164.6 MB. Free memory was 127.6 MB in the beginning and 126.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 511.10 ms. Allocated memory is still 164.6 MB. Free memory was 126.6 MB in the beginning and 109.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5405.73 ms. Allocated memory was 164.6 MB in the beginning and 228.6 MB in the end (delta: 64.0 MB). Free memory was 109.2 MB in the beginning and 174.0 MB in the end (delta: -64.9 MB). Peak memory consumption was 547.8 kB. Max. memory is 8.0 GB. * Witness Printer took 87.79 ms. Allocated memory is still 228.6 MB. Free memory was 174.0 MB in the beginning and 171.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND FALSE !(counter++<1) [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 248 SDtfs, 416 SDslu, 279 SDs, 0 SdLazy, 230 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 9441 SizeOfPredicates, 24 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 6/9 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 incorrect! Received shutdown request...