/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/cohencu-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:25:19,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:25:19,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:25:19,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:25:19,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:25:19,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:25:19,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:25:19,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:25:19,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:25:19,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:25:19,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:25:19,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:25:19,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:25:19,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:25:19,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:25:19,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:25:19,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:25:19,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:25:19,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:25:19,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:25:19,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:25:19,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:25:19,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:25:19,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:25:19,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:25:19,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:25:19,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:25:19,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:25:19,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:25:19,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:25:19,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:25:19,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:25:19,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:25:19,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:25:19,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:25:19,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:25:19,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:25:19,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:25:19,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:25:19,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:25:19,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:25:19,668 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:25:19,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:25:19,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:25:19,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:25:19,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:25:19,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:25:19,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:25:19,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:25:19,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:25:19,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:25:19,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:25:19,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:25:19,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:25:19,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:25:19,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:25:19,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:25:19,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:25:19,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:25:19,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:25:19,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:25:19,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:25:19,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:25:20,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:25:20,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:25:20,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:25:20,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:25:20,089 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:25:20,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2020-12-23 07:25:20,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d63d8ef0/0c91eaa22bb14749b0da1068e07d21a4/FLAGd8e296ebe [2020-12-23 07:25:20,714 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:25:20,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound20.c [2020-12-23 07:25:20,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d63d8ef0/0c91eaa22bb14749b0da1068e07d21a4/FLAGd8e296ebe [2020-12-23 07:25:21,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0d63d8ef0/0c91eaa22bb14749b0da1068e07d21a4 [2020-12-23 07:25:21,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:25:21,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:25:21,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:25:21,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:25:21,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:25:21,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1f6fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21, skipping insertion in model container [2020-12-23 07:25:21,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:25:21,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:25:21,353 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/cohencu-ll_valuebound20.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2020-12-23 07:25:21,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:25:21,391 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:25:21,405 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/cohencu-ll_valuebound20.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2020-12-23 07:25:21,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:25:21,435 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:25:21,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21 WrapperNode [2020-12-23 07:25:21,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:25:21,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:25:21,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:25:21,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:25:21,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:25:21,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:25:21,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:25:21,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:25:21,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... [2020-12-23 07:25:21,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:25:21,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:25:21,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:25:21,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:25:21,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:25:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:25:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:25:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:25:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:25:22,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:25:22,125 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-23 07:25:22,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:25:22 BoogieIcfgContainer [2020-12-23 07:25:22,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:25:22,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:25:22,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:25:22,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:25:22,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:25:21" (1/3) ... [2020-12-23 07:25:22,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e09fca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:25:22, skipping insertion in model container [2020-12-23 07:25:22,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:25:21" (2/3) ... [2020-12-23 07:25:22,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e09fca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:25:22, skipping insertion in model container [2020-12-23 07:25:22,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:25:22" (3/3) ... [2020-12-23 07:25:22,137 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound20.c [2020-12-23 07:25:22,144 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:25:22,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 07:25:22,170 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 07:25:22,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:25:22,198 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:25:22,199 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:25:22,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:25:22,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:25:22,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:25:22,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:25:22,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:25:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-23 07:25:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:25:22,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:22,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:22,225 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:22,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:22,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-23 07:25:22,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:22,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310461857] [2020-12-23 07:25:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:22,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310461857] [2020-12-23 07:25:22,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:25:22,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:25:22,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654192512] [2020-12-23 07:25:22,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:25:22,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:22,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:25:22,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:25:22,425 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-23 07:25:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:22,449 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2020-12-23 07:25:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:25:22,450 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-23 07:25:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:22,459 INFO L225 Difference]: With dead ends: 103 [2020-12-23 07:25:22,460 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 07:25:22,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:25:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 07:25:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-23 07:25:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 07:25:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-12-23 07:25:22,503 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2020-12-23 07:25:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:22,504 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-12-23 07:25:22,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:25:22,504 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-12-23 07:25:22,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 07:25:22,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:22,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:22,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:25:22,505 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:22,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-23 07:25:22,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:22,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086475266] [2020-12-23 07:25:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:22,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086475266] [2020-12-23 07:25:22,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:25:22,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:25:22,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958384712] [2020-12-23 07:25:22,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:25:22,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:22,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:25:22,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:25:22,638 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 4 states. [2020-12-23 07:25:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:22,756 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-23 07:25:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:25:22,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 07:25:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:22,759 INFO L225 Difference]: With dead ends: 50 [2020-12-23 07:25:22,759 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 07:25:22,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:25:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 07:25:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-12-23 07:25:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:25:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-12-23 07:25:22,772 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2020-12-23 07:25:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:22,772 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-12-23 07:25:22,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:25:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-12-23 07:25:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:25:22,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:22,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:22,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:25:22,773 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:22,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-23 07:25:22,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:22,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950145403] [2020-12-23 07:25:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:22,793 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:22,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475756287] [2020-12-23 07:25:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:22,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:25:22,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:22,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950145403] [2020-12-23 07:25:22,929 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:22,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475756287] [2020-12-23 07:25:22,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:25:22,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:25:22,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454619217] [2020-12-23 07:25:22,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:25:22,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:22,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:25:22,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:25:22,933 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 6 states. [2020-12-23 07:25:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:23,143 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-12-23 07:25:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:25:23,144 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-23 07:25:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:23,150 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:25:23,150 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:25:23,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:25:23,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:25:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-12-23 07:25:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:25:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-12-23 07:25:23,181 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 9 [2020-12-23 07:25:23,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:23,181 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-12-23 07:25:23,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:25:23,181 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-12-23 07:25:23,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:25:23,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:23,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:23,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-23 07:25:23,396 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:23,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:23,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-23 07:25:23,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:23,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579300613] [2020-12-23 07:25:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:23,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:23,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287040119] [2020-12-23 07:25:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:23,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:25:23,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:23,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579300613] [2020-12-23 07:25:23,545 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:23,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287040119] [2020-12-23 07:25:23,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:25:23,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:25:23,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119970530] [2020-12-23 07:25:23,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:25:23,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:25:23,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:25:23,564 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 6 states. [2020-12-23 07:25:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:23,710 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-12-23 07:25:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:25:23,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:25:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:23,711 INFO L225 Difference]: With dead ends: 78 [2020-12-23 07:25:23,711 INFO L226 Difference]: Without dead ends: 74 [2020-12-23 07:25:23,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:25:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-23 07:25:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-23 07:25:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:25:23,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-23 07:25:23,724 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 11 [2020-12-23 07:25:23,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:23,724 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-23 07:25:23,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:25:23,724 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-23 07:25:23,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:25:23,725 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:23,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:23,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:23,939 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:23,941 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2020-12-23 07:25:23,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:23,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167143806] [2020-12-23 07:25:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:23,964 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:23,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1164462484] [2020-12-23 07:25:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:24,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:25:24,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:24,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167143806] [2020-12-23 07:25:24,117 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:24,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164462484] [2020-12-23 07:25:24,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:25:24,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:25:24,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346817017] [2020-12-23 07:25:24,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:25:24,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:24,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:25:24,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:25:24,123 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2020-12-23 07:25:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:24,377 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-12-23 07:25:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:25:24,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-23 07:25:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:24,378 INFO L225 Difference]: With dead ends: 75 [2020-12-23 07:25:24,378 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 07:25:24,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:25:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 07:25:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-23 07:25:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-23 07:25:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-12-23 07:25:24,387 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2020-12-23 07:25:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:24,388 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-12-23 07:25:24,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:25:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-12-23 07:25:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:25:24,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:24,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:24,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:24,600 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:24,601 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2020-12-23 07:25:24,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:24,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129856253] [2020-12-23 07:25:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:24,629 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:24,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545309119] [2020-12-23 07:25:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:24,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:25:24,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:24,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129856253] [2020-12-23 07:25:24,781 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:24,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545309119] [2020-12-23 07:25:24,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:25:24,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:25:24,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769499313] [2020-12-23 07:25:24,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:25:24,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:24,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:25:24,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:25:24,784 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 7 states. [2020-12-23 07:25:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:24,983 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-12-23 07:25:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:25:24,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-23 07:25:24,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:24,988 INFO L225 Difference]: With dead ends: 98 [2020-12-23 07:25:24,988 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 07:25:24,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:25:24,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 07:25:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-12-23 07:25:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 07:25:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-12-23 07:25:25,013 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 20 [2020-12-23 07:25:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:25,013 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-12-23 07:25:25,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:25:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-12-23 07:25:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:25:25,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:25,015 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:25,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:25,218 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:25,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:25,220 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2020-12-23 07:25:25,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:25,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592348968] [2020-12-23 07:25:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:25,248 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:25,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237846413] [2020-12-23 07:25:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:25,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:25:25,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:25,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592348968] [2020-12-23 07:25:25,438 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:25,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237846413] [2020-12-23 07:25:25,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:25:25,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:25:25,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295862790] [2020-12-23 07:25:25,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:25:25,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:25,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:25:25,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:25:25,440 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2020-12-23 07:25:25,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:25,614 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-12-23 07:25:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:25:25,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-23 07:25:25,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:25,615 INFO L225 Difference]: With dead ends: 91 [2020-12-23 07:25:25,616 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 07:25:25,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:25:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 07:25:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-12-23 07:25:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:25:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-12-23 07:25:25,625 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 22 [2020-12-23 07:25:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:25,625 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-12-23 07:25:25,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:25:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-12-23 07:25:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:25:25,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:25,627 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] [2020-12-23 07:25:25,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 07:25:25,841 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:25,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2020-12-23 07:25:25,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:25,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625217144] [2020-12-23 07:25:25,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:25,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:25,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17846258] [2020-12-23 07:25:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:25,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:25:25,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:26,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:25:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:26,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625217144] [2020-12-23 07:25:26,156 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:26,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17846258] [2020-12-23 07:25:26,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:25:26,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:25:26,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219424934] [2020-12-23 07:25:26,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:25:26,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:26,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:25:26,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:25:26,158 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 8 states. [2020-12-23 07:25:26,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:26,603 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-12-23 07:25:26,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:25:26,604 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:25:26,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:26,605 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:25:26,605 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 07:25:26,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:25:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 07:25:26,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-12-23 07:25:26,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:25:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-12-23 07:25:26,615 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2020-12-23 07:25:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:26,616 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-12-23 07:25:26,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:25:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-12-23 07:25:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:25:26,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:26,617 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:26,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:26,833 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:26,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2020-12-23 07:25:26,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:26,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785522597] [2020-12-23 07:25:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:26,849 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:26,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217554999] [2020-12-23 07:25:26,850 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 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 [2020-12-23 07:25:26,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:25:26,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:25:26,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-23 07:25:26,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:27,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785522597] [2020-12-23 07:25:27,046 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:27,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217554999] [2020-12-23 07:25:27,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:25:27,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:25:27,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005849600] [2020-12-23 07:25:27,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:25:27,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:27,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:25:27,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:25:27,048 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 8 states. [2020-12-23 07:25:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:27,313 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-12-23 07:25:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:25:27,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-23 07:25:27,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:27,315 INFO L225 Difference]: With dead ends: 121 [2020-12-23 07:25:27,315 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 07:25:27,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:25:27,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 07:25:27,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-12-23 07:25:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:25:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-12-23 07:25:27,327 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 31 [2020-12-23 07:25:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:27,327 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-12-23 07:25:27,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:25:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-12-23 07:25:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:25:27,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:27,329 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] [2020-12-23 07:25:27,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:27,543 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:27,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:27,544 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2020-12-23 07:25:27,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:27,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976311860] [2020-12-23 07:25:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:27,557 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:27,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085246115] [2020-12-23 07:25:27,558 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 [2020-12-23 07:25:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:25:27,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-23 07:25:27,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:27,757 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:25:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:27,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976311860] [2020-12-23 07:25:27,778 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:27,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085246115] [2020-12-23 07:25:27,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:25:27,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:25:27,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797109389] [2020-12-23 07:25:27,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:25:27,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:27,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:25:27,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:25:27,780 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2020-12-23 07:25:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:28,181 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2020-12-23 07:25:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:25:28,182 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-23 07:25:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:28,183 INFO L225 Difference]: With dead ends: 100 [2020-12-23 07:25:28,183 INFO L226 Difference]: Without dead ends: 98 [2020-12-23 07:25:28,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:25:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-23 07:25:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-23 07:25:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-23 07:25:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-12-23 07:25:28,194 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-12-23 07:25:28,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:28,194 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-12-23 07:25:28,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:25:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-12-23 07:25:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:25:28,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:28,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:28,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-23 07:25:28,410 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:28,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:28,411 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2020-12-23 07:25:28,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:28,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582286032] [2020-12-23 07:25:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:28,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:28,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536127828] [2020-12-23 07:25:28,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:28,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:25:28,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:25:28,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 07:25:28,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:28,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582286032] [2020-12-23 07:25:28,684 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:28,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536127828] [2020-12-23 07:25:28,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:25:28,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:25:28,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923172623] [2020-12-23 07:25:28,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:25:28,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:28,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:25:28,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:25:28,687 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 10 states. [2020-12-23 07:25:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:28,982 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-12-23 07:25:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:25:28,988 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-23 07:25:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:28,989 INFO L225 Difference]: With dead ends: 111 [2020-12-23 07:25:28,989 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:25:28,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:25:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:25:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2020-12-23 07:25:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 07:25:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-12-23 07:25:29,001 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 33 [2020-12-23 07:25:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:29,002 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-12-23 07:25:29,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:25:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-12-23 07:25:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:25:29,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:29,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:29,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:29,224 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:29,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:29,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2020-12-23 07:25:29,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:29,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348080507] [2020-12-23 07:25:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:29,237 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:29,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286594962] [2020-12-23 07:25:29,237 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 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 [2020-12-23 07:25:29,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:25:29,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:25:29,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:25:29,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:29,483 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:25:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:25:29,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348080507] [2020-12-23 07:25:29,504 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:29,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286594962] [2020-12-23 07:25:29,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:25:29,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:25:29,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800040559] [2020-12-23 07:25:29,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:25:29,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:29,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:25:29,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:25:29,513 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 8 states. [2020-12-23 07:25:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:25:29,794 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2020-12-23 07:25:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:25:29,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-23 07:25:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:25:29,796 INFO L225 Difference]: With dead ends: 88 [2020-12-23 07:25:29,796 INFO L226 Difference]: Without dead ends: 86 [2020-12-23 07:25:29,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:25:29,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-23 07:25:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-12-23 07:25:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 07:25:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-12-23 07:25:29,804 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 42 [2020-12-23 07:25:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:25:29,805 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-12-23 07:25:29,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:25:29,805 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-12-23 07:25:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-23 07:25:29,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:25:29,806 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-23 07:25:30,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:25:30,009 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:25:30,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:25:30,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2020-12-23 07:25:30,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:25:30,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89441134] [2020-12-23 07:25:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:25:30,032 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:25:30,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929912312] [2020-12-23 07:25:30,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-12-23 07:25:30,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:25:30,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:25:30,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:25:30,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:25:30,233 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:25:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-23 07:25:30,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89441134] [2020-12-23 07:25:30,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:25:30,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929912312] [2020-12-23 07:25:30,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:25:30,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:25:30,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209886599] [2020-12-23 07:25:30,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:25:30,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:25:30,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:25:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:25:30,465 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 8 states. [2020-12-23 07:25:39,219 WARN L197 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-23 07:26:12,748 WARN L197 SmtUtils]: Spent 8.19 s on a formula simplification that was a NOOP. DAG size: 36 [2020-12-23 07:26:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:26:51,000 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-12-23 07:26:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:26:51,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-23 07:26:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:26:51,001 INFO L225 Difference]: With dead ends: 84 [2020-12-23 07:26:51,001 INFO L226 Difference]: Without dead ends: 78 [2020-12-23 07:26:51,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:26:51,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-23 07:26:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-23 07:26:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 07:26:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-12-23 07:26:51,013 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 42 [2020-12-23 07:26:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:26:51,013 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-12-23 07:26:51,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:26:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-12-23 07:26:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:26:51,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:26:51,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:26:51,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:26:51,221 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.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:26:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:26:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1899544187, now seen corresponding path program 2 times [2020-12-23 07:26:51,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:26:51,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097442649] [2020-12-23 07:26:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:26:51,232 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:26:51,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135522595] [2020-12-23 07:26:51,232 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 [2020-12-23 07:26:52,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:26:52,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:26:52,164 WARN L261 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-23 07:26:52,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:26:52,313 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-12-23 07:26:54,650 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (= c_ULTIMATE.start_main_~z~0 (+ (* 6 c_ULTIMATE.start_main_~n~0) 6)) (let ((.cse0 (= (+ (* 12 c_ULTIMATE.start_main_~y~0) (* 18 c_ULTIMATE.start_main_~x~0) 6) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0) (* 2 c_ULTIMATE.start_main_~z~0))))) (or (and .cse0 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)))) (<= 0 c_ULTIMATE.start_main_~a~0) (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 1)) (<= c_ULTIMATE.start_main_~a~0 20)) is different from false [2020-12-23 07:27:04,782 WARN L197 SmtUtils]: Spent 8.06 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-23 07:27:06,798 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 12 c_ULTIMATE.start_main_~y~0))) (and (= (+ .cse0 (* 18 c_ULTIMATE.start_main_~x~0) 6) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0) (* 2 c_ULTIMATE.start_main_~z~0))) (= c_ULTIMATE.start_main_~x~0 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (= c_ULTIMATE.start_main_~z~0 (+ (* 6 c_ULTIMATE.start_main_~n~0) 6)) (<= 0 c_ULTIMATE.start_main_~a~0) (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 1)) (<= c_ULTIMATE.start_main_~a~0 20) (let ((.cse1 (= (+ .cse0 (* 6 c_ULTIMATE.start_main_~z~0)) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) 12)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from false [2020-12-23 07:27:22,237 WARN L197 SmtUtils]: Spent 11.28 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-23 07:27:26,564 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 12 c_ULTIMATE.start_main_~y~0))) (and (= (+ .cse0 (* 18 c_ULTIMATE.start_main_~x~0) 6) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0) (* 2 c_ULTIMATE.start_main_~z~0))) (= c_ULTIMATE.start_main_~x~0 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (= c_ULTIMATE.start_main_~z~0 (+ (* 6 c_ULTIMATE.start_main_~n~0) 6)) (<= 0 c_ULTIMATE.start_main_~a~0) (= (+ .cse0 (* 6 c_ULTIMATE.start_main_~z~0)) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) 12)) (< c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~n~0) (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 1)) (<= c_ULTIMATE.start_main_~a~0 20))) is different from false [2020-12-23 07:27:37,444 WARN L197 SmtUtils]: Spent 10.25 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-23 07:28:18,626 WARN L197 SmtUtils]: Spent 40.53 s on a formula simplification that was a NOOP. DAG size: 55