/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/dijkstra-u_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:22:55,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:22:55,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:22:55,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:22:55,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:22:55,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:22:55,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:22:55,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:22:55,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:22:55,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:22:55,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:22:55,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:22:55,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:22:55,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:22:55,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:22:55,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:22:55,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:22:55,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:22:55,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:22:55,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:22:55,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:22:55,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:22:55,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:22:55,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:22:55,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:22:55,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:22:55,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:22:55,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:22:55,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:22:55,439 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:22:55,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:22:55,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:22:55,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:22:55,444 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:22:55,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:22:55,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:22:55,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:22:55,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:22:55,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:22:55,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:22:55,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:22:55,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:22:55,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:22:55,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:22:55,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:22:55,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:22:55,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:22:55,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:22:55,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:22:55,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:22:55,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:22:55,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:22:55,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:22:55,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:22:55,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:22:55,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:22:55,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:22:55,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:22:55,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:22:55,953 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:22:55,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound10.c [2021-01-06 17:22:56,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8372efe0a/48af459787cc42d99093f5724699ceca/FLAG4a97b78b8 [2021-01-06 17:22:56,716 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:22:56,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound10.c [2021-01-06 17:22:56,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8372efe0a/48af459787cc42d99093f5724699ceca/FLAG4a97b78b8 [2021-01-06 17:22:57,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/8372efe0a/48af459787cc42d99093f5724699ceca [2021-01-06 17:22:57,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:22:57,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:22:57,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:22:57,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:22:57,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:22:57,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69884174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57, skipping insertion in model container [2021-01-06 17:22:57,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:22:57,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:22:57,339 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/dijkstra-u_unwindbound10.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~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[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:22:57,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:22:57,413 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:22:57,425 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/dijkstra-u_unwindbound10.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~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[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:22:57,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:22:57,461 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:22:57,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57 WrapperNode [2021-01-06 17:22:57,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:22:57,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:22:57,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:22:57,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:22:57,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:22:57,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:22:57,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:22:57,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:22:57,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (1/1) ... [2021-01-06 17:22:57,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:22:57,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:22:57,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:22:57,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:22:57,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (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 [2021-01-06 17:22:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:22:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:22:57,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:22:57,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:23:02,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:23:02,408 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-01-06 17:23:02,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:23:02 BoogieIcfgContainer [2021-01-06 17:23:02,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:23:02,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:23:02,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:23:02,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:23:02,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:22:57" (1/3) ... [2021-01-06 17:23:02,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66769b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:23:02, skipping insertion in model container [2021-01-06 17:23:02,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:22:57" (2/3) ... [2021-01-06 17:23:02,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66769b9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:23:02, skipping insertion in model container [2021-01-06 17:23:02,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:23:02" (3/3) ... [2021-01-06 17:23:02,418 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound10.c [2021-01-06 17:23:02,425 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:23:02,430 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2021-01-06 17:23:02,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-01-06 17:23:02,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:23:02,479 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:23:02,479 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:23:02,479 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:23:02,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:23:02,480 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:23:02,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:23:02,480 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:23:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2021-01-06 17:23:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:23:02,503 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:02,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:02,504 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:02,510 INFO L82 PathProgramCache]: Analyzing trace with hash -578123657, now seen corresponding path program 1 times [2021-01-06 17:23:02,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:02,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572629156] [2021-01-06 17:23:02,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:02,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572629156] [2021-01-06 17:23:02,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:02,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:23:02,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292584237] [2021-01-06 17:23:02,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:23:02,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:02,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:23:02,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:23:02,688 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2021-01-06 17:23:02,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:02,711 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-01-06 17:23:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:23:02,713 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 17:23:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:02,723 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:23:02,723 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 17:23:02,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:23:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 17:23:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-01-06 17:23:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:23:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-01-06 17:23:02,767 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2021-01-06 17:23:02,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:02,767 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-01-06 17:23:02,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:23:02,767 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-01-06 17:23:02,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:23:02,768 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:02,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:02,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:23:02,769 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:02,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2021-01-06 17:23:02,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:02,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256468564] [2021-01-06 17:23:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:02,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256468564] [2021-01-06 17:23:02,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:02,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:23:02,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629867676] [2021-01-06 17:23:02,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:23:02,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:02,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:23:02,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:23:02,834 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2021-01-06 17:23:02,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:02,860 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2021-01-06 17:23:02,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:23:02,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:23:02,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:02,862 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:23:02,862 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 17:23:02,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:23:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 17:23:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-01-06 17:23:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 17:23:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-01-06 17:23:02,871 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2021-01-06 17:23:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:02,872 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-01-06 17:23:02,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:23:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-01-06 17:23:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:23:02,872 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:02,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:02,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:23:02,873 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:02,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2021-01-06 17:23:02,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:02,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001096304] [2021-01-06 17:23:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:03,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001096304] [2021-01-06 17:23:03,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:03,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:23:03,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86390304] [2021-01-06 17:23:03,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:03,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:03,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:03,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:03,154 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2021-01-06 17:23:17,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:17,388 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2021-01-06 17:23:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:17,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 17:23:17,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:17,390 INFO L225 Difference]: With dead ends: 116 [2021-01-06 17:23:17,391 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 17:23:17,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:23:17,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 17:23:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2021-01-06 17:23:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 17:23:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2021-01-06 17:23:17,405 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11 [2021-01-06 17:23:17,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:17,405 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2021-01-06 17:23:17,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:17,406 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2021-01-06 17:23:17,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:23:17,406 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:17,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:17,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:23:17,407 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:17,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:17,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1083313625, now seen corresponding path program 1 times [2021-01-06 17:23:17,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:17,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638069158] [2021-01-06 17:23:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:17,424 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:17,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274741961] [2021-01-06 17:23:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:17,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:23:17,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:17,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638069158] [2021-01-06 17:23:17,663 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:17,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274741961] [2021-01-06 17:23:17,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:17,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:23:17,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082297330] [2021-01-06 17:23:17,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:17,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:17,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:17,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:17,666 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 5 states. [2021-01-06 17:23:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:17,709 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2021-01-06 17:23:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:23:17,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 17:23:17,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:17,716 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:23:17,716 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:23:17,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:17,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:23:17,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-01-06 17:23:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 17:23:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-01-06 17:23:17,735 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 12 [2021-01-06 17:23:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:17,736 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-01-06 17:23:17,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-01-06 17:23:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:23:17,740 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:17,740 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:17,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:17,957 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:17,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2047013432, now seen corresponding path program 1 times [2021-01-06 17:23:17,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:17,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223689065] [2021-01-06 17:23:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:18,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223689065] [2021-01-06 17:23:18,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391692370] [2021-01-06 17:23:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:18,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:23:18,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:18,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:23:18,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-01-06 17:23:18,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736069544] [2021-01-06 17:23:18,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:18,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:18,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:18,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:18,118 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2021-01-06 17:23:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:18,173 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2021-01-06 17:23:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:18,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 17:23:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:18,175 INFO L225 Difference]: With dead ends: 106 [2021-01-06 17:23:18,175 INFO L226 Difference]: Without dead ends: 67 [2021-01-06 17:23:18,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-06 17:23:18,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-01-06 17:23:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-06 17:23:18,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2021-01-06 17:23:18,187 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 13 [2021-01-06 17:23:18,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:18,187 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2021-01-06 17:23:18,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:18,188 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2021-01-06 17:23:18,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:23:18,188 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:18,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:18,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:18,404 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:18,406 INFO L82 PathProgramCache]: Analyzing trace with hash -918298294, now seen corresponding path program 1 times [2021-01-06 17:23:18,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:18,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524321224] [2021-01-06 17:23:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:23:18,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524321224] [2021-01-06 17:23:18,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:18,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:23:18,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057630146] [2021-01-06 17:23:18,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:18,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:18,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:18,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:18,571 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 5 states. [2021-01-06 17:23:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:46,025 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2021-01-06 17:23:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:23:46,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:23:46,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:46,027 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:23:46,027 INFO L226 Difference]: Without dead ends: 83 [2021-01-06 17:23:46,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:23:46,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-06 17:23:46,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 75. [2021-01-06 17:23:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:23:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-01-06 17:23:46,040 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 14 [2021-01-06 17:23:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:46,040 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-01-06 17:23:46,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-01-06 17:23:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:23:46,042 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:46,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:46,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 17:23:46,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:46,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:46,043 INFO L82 PathProgramCache]: Analyzing trace with hash -966633767, now seen corresponding path program 1 times [2021-01-06 17:23:46,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:46,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256954297] [2021-01-06 17:23:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:46,057 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:46,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393863024] [2021-01-06 17:23:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:46,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:23:46,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:46,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256954297] [2021-01-06 17:23:46,298 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:46,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393863024] [2021-01-06 17:23:46,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:46,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:23:46,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219178027] [2021-01-06 17:23:46,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:23:46,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:46,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:23:46,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:46,304 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 6 states. [2021-01-06 17:23:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:52,892 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-01-06 17:23:52,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:52,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:23:52,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:52,894 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:23:52,894 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:23:52,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:23:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:23:52,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-01-06 17:23:52,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 17:23:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2021-01-06 17:23:52,903 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2021-01-06 17:23:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:52,903 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2021-01-06 17:23:52,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:23:52,903 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2021-01-06 17:23:52,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:23:52,904 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:52,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:53,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:53,114 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:53,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:53,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1597540912, now seen corresponding path program 1 times [2021-01-06 17:23:53,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:53,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863909377] [2021-01-06 17:23:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:53,137 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:53,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130172631] [2021-01-06 17:23:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:53,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:23:53,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:53,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863909377] [2021-01-06 17:23:53,265 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:53,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130172631] [2021-01-06 17:23:53,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:53,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:23:53,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417433981] [2021-01-06 17:23:53,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:23:53,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:53,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:23:53,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:53,269 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2021-01-06 17:23:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:53,303 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2021-01-06 17:23:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:53,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:23:53,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:53,307 INFO L225 Difference]: With dead ends: 75 [2021-01-06 17:23:53,307 INFO L226 Difference]: Without dead ends: 63 [2021-01-06 17:23:53,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-06 17:23:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-01-06 17:23:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-06 17:23:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2021-01-06 17:23:53,325 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 15 [2021-01-06 17:23:53,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:53,325 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2021-01-06 17:23:53,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:23:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2021-01-06 17:23:53,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:23:53,326 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:53,327 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:53,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:53,542 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:53,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:53,543 INFO L82 PathProgramCache]: Analyzing trace with hash -745841841, now seen corresponding path program 2 times [2021-01-06 17:23:53,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:53,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030141182] [2021-01-06 17:23:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:53,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030141182] [2021-01-06 17:23:53,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250411473] [2021-01-06 17:23:53,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:53,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:23:53,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:53,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:23:53,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 17:23:53,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:53,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-01-06 17:23:53,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062367744] [2021-01-06 17:23:53,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:53,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:53,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:53,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:23:53,794 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 5 states. [2021-01-06 17:23:53,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:53,853 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2021-01-06 17:23:53,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:23:53,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-06 17:23:53,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:53,854 INFO L225 Difference]: With dead ends: 115 [2021-01-06 17:23:53,854 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 17:23:53,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:23:53,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 17:23:53,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2021-01-06 17:23:53,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-06 17:23:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2021-01-06 17:23:53,862 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 16 [2021-01-06 17:23:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:53,862 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2021-01-06 17:23:53,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2021-01-06 17:23:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:23:53,863 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:53,864 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:54,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:54,077 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:54,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:54,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1646243637, now seen corresponding path program 1 times [2021-01-06 17:23:54,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:54,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973342902] [2021-01-06 17:23:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:54,089 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:54,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258776429] [2021-01-06 17:23:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:54,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:23:54,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:54,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973342902] [2021-01-06 17:23:54,205 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:54,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258776429] [2021-01-06 17:23:54,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:54,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:23:54,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779096563] [2021-01-06 17:23:54,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:23:54,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:54,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:23:54,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:54,207 INFO L87 Difference]: Start difference. First operand 61 states and 67 transitions. Second operand 6 states. [2021-01-06 17:23:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:54,265 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2021-01-06 17:23:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:23:54,266 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-06 17:23:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:54,266 INFO L225 Difference]: With dead ends: 77 [2021-01-06 17:23:54,267 INFO L226 Difference]: Without dead ends: 63 [2021-01-06 17:23:54,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:23:54,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-06 17:23:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-01-06 17:23:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:23:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2021-01-06 17:23:54,273 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 17 [2021-01-06 17:23:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:54,274 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2021-01-06 17:23:54,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:23:54,274 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2021-01-06 17:23:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:23:54,275 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:54,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:54,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:54,491 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:23:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:54,492 INFO L82 PathProgramCache]: Analyzing trace with hash -545991120, now seen corresponding path program 1 times [2021-01-06 17:23:54,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:54,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100920953] [2021-01-06 17:23:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:54,503 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:54,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950738548] [2021-01-06 17:23:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:54,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:23:54,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:23:54,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100920953] [2021-01-06 17:23:54,713 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:54,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950738548] [2021-01-06 17:23:54,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:54,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:23:54,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494591881] [2021-01-06 17:23:54,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:23:54,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:54,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:23:54,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:54,715 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 6 states. [2021-01-06 17:24:11,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:11,754 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2021-01-06 17:24:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:24:11,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 17:24:11,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:11,756 INFO L225 Difference]: With dead ends: 92 [2021-01-06 17:24:11,756 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 17:24:11,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:24:11,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 17:24:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-01-06 17:24:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:24:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2021-01-06 17:24:11,774 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 18 [2021-01-06 17:24:11,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:11,774 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2021-01-06 17:24:11,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2021-01-06 17:24:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:24:11,775 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:11,775 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:11,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:11,976 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:11,977 INFO L82 PathProgramCache]: Analyzing trace with hash -711299181, now seen corresponding path program 1 times [2021-01-06 17:24:11,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:11,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093738594] [2021-01-06 17:24:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:11,989 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:11,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222796158] [2021-01-06 17:24:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:12,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:24:12,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:12,225 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:24:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:24:12,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093738594] [2021-01-06 17:24:12,254 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:12,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222796158] [2021-01-06 17:24:12,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:24:12,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:24:12,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724195537] [2021-01-06 17:24:12,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:24:12,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:12,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:24:12,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:24:12,256 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 6 states. [2021-01-06 17:24:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:24,667 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2021-01-06 17:24:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:24:24,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-01-06 17:24:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:24,668 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:24:24,668 INFO L226 Difference]: Without dead ends: 74 [2021-01-06 17:24:24,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:24,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-06 17:24:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2021-01-06 17:24:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:24:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2021-01-06 17:24:24,675 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 20 [2021-01-06 17:24:24,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:24,676 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2021-01-06 17:24:24,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:24:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2021-01-06 17:24:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:24:24,678 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:24,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:24,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:24:24,884 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:24,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1399265450, now seen corresponding path program 1 times [2021-01-06 17:24:24,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:24,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112175983] [2021-01-06 17:24:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:24,895 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:24,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469126675] [2021-01-06 17:24:24,895 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:25,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:24:25,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:25,314 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:24:25,322 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:24:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:25,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112175983] [2021-01-06 17:24:25,363 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:25,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469126675] [2021-01-06 17:24:25,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:25,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:24:25,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187553441] [2021-01-06 17:24:25,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:24:25,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:25,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:24:25,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:25,365 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 10 states. [2021-01-06 17:24:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:41,123 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2021-01-06 17:24:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:24:41,124 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2021-01-06 17:24:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:41,125 INFO L225 Difference]: With dead ends: 154 [2021-01-06 17:24:41,125 INFO L226 Difference]: Without dead ends: 115 [2021-01-06 17:24:41,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:24:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-01-06 17:24:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 95. [2021-01-06 17:24:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-06 17:24:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2021-01-06 17:24:41,134 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 29 [2021-01-06 17:24:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:41,135 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2021-01-06 17:24:41,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:24:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2021-01-06 17:24:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:24:41,136 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:41,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:41,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:41,346 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:41,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:41,347 INFO L82 PathProgramCache]: Analyzing trace with hash -427539036, now seen corresponding path program 1 times [2021-01-06 17:24:41,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:41,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964461663] [2021-01-06 17:24:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:41,357 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:41,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676514719] [2021-01-06 17:24:41,357 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:41,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:24:41,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:41,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964461663] [2021-01-06 17:24:41,535 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:41,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676514719] [2021-01-06 17:24:41,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:41,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:24:41,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000709121] [2021-01-06 17:24:41,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:24:41,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:41,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:24:41,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:24:41,537 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 7 states. [2021-01-06 17:24:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:41,598 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2021-01-06 17:24:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:24:41,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-01-06 17:24:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:41,600 INFO L225 Difference]: With dead ends: 113 [2021-01-06 17:24:41,600 INFO L226 Difference]: Without dead ends: 101 [2021-01-06 17:24:41,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:24:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-01-06 17:24:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2021-01-06 17:24:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-01-06 17:24:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2021-01-06 17:24:41,609 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 30 [2021-01-06 17:24:41,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:41,609 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2021-01-06 17:24:41,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:24:41,609 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2021-01-06 17:24:41,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:24:41,610 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:41,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:41,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:41,824 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:41,825 INFO L82 PathProgramCache]: Analyzing trace with hash -369177479, now seen corresponding path program 1 times [2021-01-06 17:24:41,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:41,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574365671] [2021-01-06 17:24:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:41,835 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:41,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059577735] [2021-01-06 17:24:41,836 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:42,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:24:42,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:42,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574365671] [2021-01-06 17:24:42,379 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:42,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059577735] [2021-01-06 17:24:42,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:42,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:24:42,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904400838] [2021-01-06 17:24:42,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:24:42,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:42,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:24:42,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:42,381 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 10 states. [2021-01-06 17:25:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:25:00,372 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2021-01-06 17:25:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:25:00,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 17:25:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:25:00,374 INFO L225 Difference]: With dead ends: 117 [2021-01-06 17:25:00,374 INFO L226 Difference]: Without dead ends: 111 [2021-01-06 17:25:00,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:25:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-06 17:25:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-01-06 17:25:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-01-06 17:25:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2021-01-06 17:25:00,383 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 31 [2021-01-06 17:25:00,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:25:00,383 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2021-01-06 17:25:00,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:25:00,384 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2021-01-06 17:25:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:25:00,385 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:25:00,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:25:00,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:25:00,594 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:25:00,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:25:00,595 INFO L82 PathProgramCache]: Analyzing trace with hash -512605587, now seen corresponding path program 2 times [2021-01-06 17:25:00,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:25:00,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788969881] [2021-01-06 17:25:00,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:25:00,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:25:00,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257328663] [2021-01-06 17:25:00,605 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:25:00,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:25:00,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:25:00,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:25:00,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:25:01,170 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:25:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:25:01,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788969881] [2021-01-06 17:25:01,221 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:25:01,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257328663] [2021-01-06 17:25:01,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:25:01,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:25:01,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908829475] [2021-01-06 17:25:01,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:25:01,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:25:01,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:25:01,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:25:01,223 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 12 states. [2021-01-06 17:25:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:25:22,044 INFO L93 Difference]: Finished difference Result 173 states and 187 transitions. [2021-01-06 17:25:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:25:22,044 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2021-01-06 17:25:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:25:22,046 INFO L225 Difference]: With dead ends: 173 [2021-01-06 17:25:22,046 INFO L226 Difference]: Without dead ends: 134 [2021-01-06 17:25:22,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:25:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-01-06 17:25:22,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2021-01-06 17:25:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-06 17:25:22,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2021-01-06 17:25:22,060 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 32 [2021-01-06 17:25:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:25:22,060 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2021-01-06 17:25:22,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:25:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2021-01-06 17:25:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:25:22,061 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:25:22,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:25:22,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:25:22,266 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:25:22,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:25:22,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1702884924, now seen corresponding path program 1 times [2021-01-06 17:25:22,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:25:22,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381029979] [2021-01-06 17:25:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:25:22,278 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:25:22,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343772916] [2021-01-06 17:25:22,278 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:25:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:25:23,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:25:23,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:25:27,728 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2021-01-06 17:25:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:25:27,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381029979] [2021-01-06 17:25:27,776 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:25:27,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343772916] [2021-01-06 17:25:27,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:25:27,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:25:27,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827073471] [2021-01-06 17:25:27,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:25:27,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:25:27,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:25:27,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:25:27,778 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand 11 states. [2021-01-06 17:25:59,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:25:59,860 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2021-01-06 17:25:59,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:25:59,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2021-01-06 17:25:59,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:25:59,862 INFO L225 Difference]: With dead ends: 126 [2021-01-06 17:25:59,863 INFO L226 Difference]: Without dead ends: 122 [2021-01-06 17:25:59,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:25:59,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-01-06 17:25:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-01-06 17:25:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-06 17:25:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2021-01-06 17:25:59,871 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 33 [2021-01-06 17:25:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:25:59,872 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2021-01-06 17:25:59,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:25:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2021-01-06 17:25:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:25:59,873 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:25:59,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:00,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:26:00,081 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:00,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1289112941, now seen corresponding path program 2 times [2021-01-06 17:26:00,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:00,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220027249] [2021-01-06 17:26:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:00,091 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:00,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473100666] [2021-01-06 17:26:00,091 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:00,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:26:00,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:26:00,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:26:00,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:26:00,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220027249] [2021-01-06 17:26:00,273 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:00,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473100666] [2021-01-06 17:26:00,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:26:00,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:26:00,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921418119] [2021-01-06 17:26:00,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:26:00,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:00,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:26:00,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:26:00,275 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 8 states. [2021-01-06 17:26:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:00,363 INFO L93 Difference]: Finished difference Result 146 states and 151 transitions. [2021-01-06 17:26:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:26:00,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:26:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:00,365 INFO L225 Difference]: With dead ends: 146 [2021-01-06 17:26:00,365 INFO L226 Difference]: Without dead ends: 134 [2021-01-06 17:26:00,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:26:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-01-06 17:26:00,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 120. [2021-01-06 17:26:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-01-06 17:26:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2021-01-06 17:26:00,374 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 33 [2021-01-06 17:26:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:00,374 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2021-01-06 17:26:00,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:26:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2021-01-06 17:26:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:26:00,375 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:00,375 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:00,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:00,589 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:00,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1307426256, now seen corresponding path program 2 times [2021-01-06 17:26:00,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:00,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811486028] [2021-01-06 17:26:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:00,600 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:00,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219478562] [2021-01-06 17:26:00,600 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:03,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:26:03,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:26:03,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:26:03,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:26:04,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811486028] [2021-01-06 17:26:04,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:04,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219478562] [2021-01-06 17:26:04,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:26:04,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:26:04,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093951683] [2021-01-06 17:26:04,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:26:04,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:04,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:26:04,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:26:04,189 INFO L87 Difference]: Start difference. First operand 120 states and 127 transitions. Second operand 12 states. [2021-01-06 17:26:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:14,102 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2021-01-06 17:26:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:26:14,103 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2021-01-06 17:26:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:14,104 INFO L225 Difference]: With dead ends: 129 [2021-01-06 17:26:14,104 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 17:26:14,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:26:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 17:26:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2021-01-06 17:26:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2021-01-06 17:26:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2021-01-06 17:26:14,114 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 34 [2021-01-06 17:26:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:14,114 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2021-01-06 17:26:14,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:26:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2021-01-06 17:26:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 17:26:14,115 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:14,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:14,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:14,321 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash 90029215, now seen corresponding path program 1 times [2021-01-06 17:26:14,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:14,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695676413] [2021-01-06 17:26:14,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:14,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:14,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889185280] [2021-01-06 17:26:14,337 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true