/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/geo3-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:18:44,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:18:44,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:18:44,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:18:44,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:18:44,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:18:44,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:18:44,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:18:44,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:18:44,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:18:44,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:18:44,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:18:44,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:18:44,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:18:44,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:18:44,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:18:44,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:18:44,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:18:44,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:18:44,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:18:44,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:18:44,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:18:44,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:18:44,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:18:44,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:18:44,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:18:44,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:18:44,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:18:44,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:18:44,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:18:44,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:18:44,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:18:44,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:18:44,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:18:44,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:18:44,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:18:44,718 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 07:18:44,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:18:44,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:18:44,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:18:44,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:18:44,774 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:18:44,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:18:44,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:18:44,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:18:44,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:18:44,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:18:44,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:18:44,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:18:44,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:18:44,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:18:44,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:18:44,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:18:44,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:18:44,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:18:44,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:18:44,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:18:44,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:18:44,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:18:44,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:18:44,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:18:44,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:18:44,780 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:18:45,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:18:45,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:18:45,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:18:45,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:18:45,263 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:18:45,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/geo3-ll.c [2020-12-23 07:18:45,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/30bf55db8/b4aed5b5e79f4da6973beb2729da5ef1/FLAGaaf624992 [2020-12-23 07:18:46,059 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:18:46,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo3-ll.c [2020-12-23 07:18:46,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/30bf55db8/b4aed5b5e79f4da6973beb2729da5ef1/FLAGaaf624992 [2020-12-23 07:18:46,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/30bf55db8/b4aed5b5e79f4da6973beb2729da5ef1 [2020-12-23 07:18:46,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:18:46,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:18:46,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:18:46,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:18:46,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:18:46,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c4b403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46, skipping insertion in model container [2020-12-23 07:18:46,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:18:46,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:18:46,672 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/geo3-ll.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~az~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2020-12-23 07:18:46,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:18:46,700 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:18:46,715 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/geo3-ll.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~az~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] [2020-12-23 07:18:46,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:18:46,739 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:18:46,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46 WrapperNode [2020-12-23 07:18:46,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:18:46,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:18:46,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:18:46,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:18:46,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:18:46,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:18:46,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:18:46,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:18:46,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (1/1) ... [2020-12-23 07:18:46,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:18:46,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:18:46,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:18:46,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:18:46,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (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 07:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:18:46,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:18:46,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:18:47,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:18:47,278 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 07:18:47,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:18:47 BoogieIcfgContainer [2020-12-23 07:18:47,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:18:47,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:18:47,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:18:47,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:18:47,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:18:46" (1/3) ... [2020-12-23 07:18:47,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c80c0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:18:47, skipping insertion in model container [2020-12-23 07:18:47,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:18:46" (2/3) ... [2020-12-23 07:18:47,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c80c0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:18:47, skipping insertion in model container [2020-12-23 07:18:47,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:18:47" (3/3) ... [2020-12-23 07:18:47,292 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll.c [2020-12-23 07:18:47,300 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:18:47,305 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 07:18:47,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 07:18:47,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:18:47,373 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:18:47,373 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:18:47,373 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:18:47,374 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:18:47,374 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:18:47,374 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:18:47,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:18:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-23 07:18:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 07:18:47,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:47,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 07:18:47,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:47,444 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-12-23 07:18:47,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:47,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041478812] [2020-12-23 07:18:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:47,632 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:47,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705800640] [2020-12-23 07:18:47,634 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 07:18:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:18:47,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 07:18:47,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:47,931 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 07:18:47,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041478812] [2020-12-23 07:18:47,934 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:47,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705800640] [2020-12-23 07:18:47,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:18:47,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:18:47,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947693046] [2020-12-23 07:18:47,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:18:47,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:47,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:18:47,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:18:47,979 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-12-23 07:18:48,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:48,070 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2020-12-23 07:18:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:18:48,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-23 07:18:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:48,082 INFO L225 Difference]: With dead ends: 38 [2020-12-23 07:18:48,083 INFO L226 Difference]: Without dead ends: 15 [2020-12-23 07:18:48,087 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 07:18:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-23 07:18:48,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-12-23 07:18:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-23 07:18:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-12-23 07:18:48,129 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2020-12-23 07:18:48,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:48,130 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-12-23 07:18:48,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:18:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-12-23 07:18:48,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 07:18:48,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:48,132 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:48,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-23 07:18:48,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:48,349 INFO L82 PathProgramCache]: Analyzing trace with hash 300806046, now seen corresponding path program 1 times [2020-12-23 07:18:48,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:48,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718488373] [2020-12-23 07:18:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:48,363 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:48,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427172851] [2020-12-23 07:18:48,363 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 07:18:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:18:48,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-23 07:18:48,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:48,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718488373] [2020-12-23 07:18:48,580 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:48,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427172851] [2020-12-23 07:18:48,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:48,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:18:48,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615307003] [2020-12-23 07:18:48,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:18:48,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:48,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:18:48,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:18:48,584 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2020-12-23 07:18:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:52,685 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-23 07:18:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:18:52,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-23 07:18:52,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:52,687 INFO L225 Difference]: With dead ends: 24 [2020-12-23 07:18:52,688 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 07:18:52,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:18:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 07:18:52,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2020-12-23 07:18:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-23 07:18:52,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-23 07:18:52,695 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2020-12-23 07:18:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:52,695 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-23 07:18:52,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:18:52,695 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-23 07:18:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:18:52,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:52,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:52,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:52,898 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:52,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:52,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2016022751, now seen corresponding path program 1 times [2020-12-23 07:18:52,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:52,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580316767] [2020-12-23 07:18:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:52,914 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:52,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705858339] [2020-12-23 07:18:52,917 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 07:18:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:18:52,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:18:52,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 07:18:53,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580316767] [2020-12-23 07:18:53,032 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:53,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705858339] [2020-12-23 07:18:53,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:18:53,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:18:53,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32100982] [2020-12-23 07:18:53,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:18:53,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:53,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:18:53,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:18:53,034 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2020-12-23 07:18:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:57,105 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-12-23 07:18:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:18:57,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 07:18:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:57,107 INFO L225 Difference]: With dead ends: 16 [2020-12-23 07:18:57,107 INFO L226 Difference]: Without dead ends: 12 [2020-12-23 07:18:57,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:18:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-23 07:18:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-23 07:18:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-23 07:18:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-12-23 07:18:57,113 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2020-12-23 07:18:57,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:57,114 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-12-23 07:18:57,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:18:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-12-23 07:18:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:18:57,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:57,115 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2020-12-23 07:18:57,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:57,331 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:57,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:57,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2016063466, now seen corresponding path program 2 times [2020-12-23 07:18:57,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:57,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986123815] [2020-12-23 07:18:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:57,345 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:57,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476069341] [2020-12-23 07:18:57,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:57,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:18:57,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:57,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:18:57,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:19:16,741 WARN L197 SmtUtils]: Spent 19.10 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-23 07:19:22,943 WARN L197 SmtUtils]: Spent 2.11 s on a formula simplification that was a NOOP. DAG size: 16 [2020-12-23 07:19:27,176 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-23 07:19:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:19:29,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986123815] [2020-12-23 07:19:29,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:19:29,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476069341] [2020-12-23 07:19:29,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:19:29,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:19:29,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819864160] [2020-12-23 07:19:29,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:19:29,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:19:29,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:19:29,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=50, Unknown=3, NotChecked=0, Total=72 [2020-12-23 07:19:29,243 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2020-12-23 07:19:54,299 WARN L197 SmtUtils]: Spent 4.50 s on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-23 07:19:56,367 WARN L197 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-23 07:19:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:19:56,448 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-12-23 07:19:56,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:19:56,449 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-23 07:19:56,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:19:56,450 INFO L225 Difference]: With dead ends: 19 [2020-12-23 07:19:56,452 INFO L226 Difference]: Without dead ends: 17 [2020-12-23 07:19:56,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=34, Invalid=92, Unknown=6, NotChecked=0, Total=132 [2020-12-23 07:19:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-23 07:19:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-12-23 07:19:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-23 07:19:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-23 07:19:56,463 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-12-23 07:19:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:19:56,463 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-23 07:19:56,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:19:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-23 07:19:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:19:56,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:19:56,465 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2020-12-23 07:19:56,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:19:56,672 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:19:56,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:19:56,673 INFO L82 PathProgramCache]: Analyzing trace with hash -271025122, now seen corresponding path program 3 times [2020-12-23 07:19:56,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:19:56,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461487881] [2020-12-23 07:19:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:19:56,684 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:19:56,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385859318] [2020-12-23 07:19:56,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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