/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/egcd2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:38:56,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:38:56,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:38:56,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:38:56,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:38:56,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:38:56,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:38:56,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:38:56,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:38:56,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:38:56,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:38:56,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:38:56,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:38:56,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:38:56,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:38:56,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:38:56,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:38:56,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:38:56,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:38:56,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:38:56,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:38:56,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:38:56,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:38:56,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:38:56,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:38:56,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:38:56,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:38:56,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:38:56,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:38:56,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:38:56,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:38:56,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:38:56,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:38:56,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:38:56,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:38:56,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:38:56,682 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 07:38:56,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:38:56,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:38:56,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:38:56,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:38:56,739 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:38:56,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:38:56,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:38:56,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:38:56,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:38:56,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:38:56,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:38:56,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:38:56,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:38:56,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:38:56,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:38:56,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:38:56,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:38:56,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:38:56,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:38:56,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:38:56,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:38:56,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:38:56,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:38:56,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:38:56,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:38:56,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:38:57,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:38:57,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:38:57,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:38:57,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:38:57,170 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:38:57,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2020-12-23 07:38:57,273 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/aaaf696d4/bced49817175458e8ee19ead35b4debc/FLAG12cc4846e [2020-12-23 07:38:57,874 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:38:57,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2020-12-23 07:38:57,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/aaaf696d4/bced49817175458e8ee19ead35b4debc/FLAG12cc4846e [2020-12-23 07:38:58,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/aaaf696d4/bced49817175458e8ee19ead35b4debc [2020-12-23 07:38:58,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:38:58,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:38:58,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:38:58,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:38:58,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:38:58,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb21864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58, skipping insertion in model container [2020-12-23 07:38:58,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:38:58,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:38:58,513 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/egcd2-ll_valuebound2.c[490,503] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:38:58,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:38:58,564 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:38:58,581 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/egcd2-ll_valuebound2.c[490,503] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~xy~0,] left hand side expression in assignment: lhs: VariableLHS[~yy~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:38:58,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:38:58,648 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:38:58,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58 WrapperNode [2020-12-23 07:38:58,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:38:58,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:38:58,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:38:58,651 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:38:58,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:38:58,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:38:58,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:38:58,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:38:58,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (1/1) ... [2020-12-23 07:38:58,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:38:58,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:38:58,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:38:58,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:38:58,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (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 07:38:58,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:38:58,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:38:58,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:38:58,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:38:59,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:38:59,342 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-23 07:38:59,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:38:59 BoogieIcfgContainer [2020-12-23 07:38:59,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:38:59,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:38:59,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:38:59,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:38:59,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:38:58" (1/3) ... [2020-12-23 07:38:59,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3677bb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:38:59, skipping insertion in model container [2020-12-23 07:38:59,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:38:58" (2/3) ... [2020-12-23 07:38:59,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3677bb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:38:59, skipping insertion in model container [2020-12-23 07:38:59,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:38:59" (3/3) ... [2020-12-23 07:38:59,388 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2020-12-23 07:38:59,402 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:38:59,417 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-23 07:38:59,452 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 07:38:59,480 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:38:59,480 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:38:59,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:38:59,481 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:38:59,481 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:38:59,481 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:38:59,481 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:38:59,481 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:38:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-12-23 07:38:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:38:59,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:59,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:59,506 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:59,513 INFO L82 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2020-12-23 07:38:59,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:59,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276638097] [2020-12-23 07:38:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:59,709 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 07:38:59,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276638097] [2020-12-23 07:38:59,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:38:59,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:38:59,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544625781] [2020-12-23 07:38:59,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:38:59,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:38:59,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:38:59,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:38:59,738 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-12-23 07:38:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:38:59,763 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2020-12-23 07:38:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:38:59,764 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-12-23 07:38:59,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:38:59,776 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:38:59,776 INFO L226 Difference]: Without dead ends: 41 [2020-12-23 07:38:59,780 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 07:38:59,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-23 07:38:59,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-23 07:38:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-23 07:38:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-12-23 07:38:59,821 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2020-12-23 07:38:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:38:59,822 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-12-23 07:38:59,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:38:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-12-23 07:38:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:38:59,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:38:59,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:38:59,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:38:59,824 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:38:59,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:38:59,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2020-12-23 07:38:59,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:38:59,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851912899] [2020-12-23 07:38:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:38:59,858 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:38:59,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068691851] [2020-12-23 07:38:59,859 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 07:38:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:38:59,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:38:59,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:00,108 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 07:39:00,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851912899] [2020-12-23 07:39:00,109 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:00,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068691851] [2020-12-23 07:39:00,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:00,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:39:00,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077946547] [2020-12-23 07:39:00,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:39:00,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:00,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:39:00,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:39:00,114 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 5 states. [2020-12-23 07:39:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:00,250 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-12-23 07:39:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:39:00,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 07:39:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:00,253 INFO L225 Difference]: With dead ends: 69 [2020-12-23 07:39:00,253 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:39:00,254 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:39:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-12-23 07:39:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 07:39:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-12-23 07:39:00,263 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2020-12-23 07:39:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:00,264 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-12-23 07:39:00,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:39:00,264 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-12-23 07:39:00,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:39:00,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:00,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:00,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:39:00,480 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:00,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:00,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2020-12-23 07:39:00,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:00,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386350872] [2020-12-23 07:39:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:00,503 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:00,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708725035] [2020-12-23 07:39:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 07:39:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:00,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:39:00,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:00,674 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 07:39:00,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386350872] [2020-12-23 07:39:00,675 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:00,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708725035] [2020-12-23 07:39:00,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:00,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:39:00,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907210806] [2020-12-23 07:39:00,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:39:00,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:00,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:39:00,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:39:00,679 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 8 states. [2020-12-23 07:39:00,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:00,990 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2020-12-23 07:39:00,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:39:00,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-23 07:39:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:00,992 INFO L225 Difference]: With dead ends: 79 [2020-12-23 07:39:00,992 INFO L226 Difference]: Without dead ends: 77 [2020-12-23 07:39:00,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-23 07:39:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2020-12-23 07:39:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 07:39:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-12-23 07:39:01,002 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2020-12-23 07:39:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:01,002 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-12-23 07:39:01,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:39:01,003 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-12-23 07:39:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:39:01,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:01,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:01,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:01,221 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:01,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:01,223 INFO L82 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2020-12-23 07:39:01,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:01,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961809667] [2020-12-23 07:39:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:01,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:01,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046985777] [2020-12-23 07:39:01,255 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 07:39:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:01,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:39:01,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:01,646 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 07:39:01,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961809667] [2020-12-23 07:39:01,646 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:01,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046985777] [2020-12-23 07:39:01,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:01,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 07:39:01,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493074335] [2020-12-23 07:39:01,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:39:01,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:01,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:39:01,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:39:01,649 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 12 states. [2020-12-23 07:39:02,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:02,144 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-12-23 07:39:02,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:39:02,145 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-12-23 07:39:02,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:02,146 INFO L225 Difference]: With dead ends: 63 [2020-12-23 07:39:02,146 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:39:02,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:39:02,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:39:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-12-23 07:39:02,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:39:02,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-12-23 07:39:02,155 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2020-12-23 07:39:02,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:02,156 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-12-23 07:39:02,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:39:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-12-23 07:39:02,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 07:39:02,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:02,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:02,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:02,371 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:02,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:02,372 INFO L82 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2020-12-23 07:39:02,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:02,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602942694] [2020-12-23 07:39:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:02,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:02,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692448107] [2020-12-23 07:39:02,390 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 07:39:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:02,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:39:02,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:02,751 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 07:39:02,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602942694] [2020-12-23 07:39:02,752 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:02,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692448107] [2020-12-23 07:39:02,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:02,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-23 07:39:02,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332547219] [2020-12-23 07:39:02,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:39:02,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:02,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:39:02,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:39:02,755 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 12 states. [2020-12-23 07:39:03,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:03,222 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-12-23 07:39:03,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:39:03,223 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2020-12-23 07:39:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:03,224 INFO L225 Difference]: With dead ends: 61 [2020-12-23 07:39:03,224 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 07:39:03,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:39:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 07:39:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-12-23 07:39:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:39:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-12-23 07:39:03,233 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2020-12-23 07:39:03,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:03,233 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-12-23 07:39:03,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:39:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-12-23 07:39:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 07:39:03,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:03,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:03,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:03,450 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:03,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2020-12-23 07:39:03,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:03,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041088495] [2020-12-23 07:39:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:03,467 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:03,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806035131] [2020-12-23 07:39:03,468 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 07:39:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:03,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-23 07:39:03,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:03,681 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 07:39:03,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041088495] [2020-12-23 07:39:03,682 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:03,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806035131] [2020-12-23 07:39:03,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:03,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 07:39:03,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495526883] [2020-12-23 07:39:03,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:39:03,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:03,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:39:03,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:03,684 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2020-12-23 07:39:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:05,902 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-12-23 07:39:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:39:05,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-23 07:39:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:05,904 INFO L225 Difference]: With dead ends: 63 [2020-12-23 07:39:05,904 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:39:05,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:39:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:39:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-12-23 07:39:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 07:39:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-12-23 07:39:05,915 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2020-12-23 07:39:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:05,916 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-12-23 07:39:05,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:39:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-12-23 07:39:05,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:39:05,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:05,917 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:06,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:39:06,131 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:06,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:06,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2020-12-23 07:39:06,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:06,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842460873] [2020-12-23 07:39:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:06,157 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:06,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083837280] [2020-12-23 07:39:06,159 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 07:39:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:06,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:39:06,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:06,330 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 07:39:06,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842460873] [2020-12-23 07:39:06,331 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:06,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083837280] [2020-12-23 07:39:06,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:06,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:39:06,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996177920] [2020-12-23 07:39:06,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:39:06,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:06,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:39:06,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:39:06,333 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-12-23 07:39:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:06,538 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-12-23 07:39:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:39:06,539 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-23 07:39:06,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:06,542 INFO L225 Difference]: With dead ends: 104 [2020-12-23 07:39:06,543 INFO L226 Difference]: Without dead ends: 102 [2020-12-23 07:39:06,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-23 07:39:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 74. [2020-12-23 07:39:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-23 07:39:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2020-12-23 07:39:06,578 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 27 [2020-12-23 07:39:06,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:06,581 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2020-12-23 07:39:06,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:39:06,581 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2020-12-23 07:39:06,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:39:06,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:06,584 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:06,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:06,798 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:06,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2020-12-23 07:39:06,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:06,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130074927] [2020-12-23 07:39:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:06,829 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:06,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967552506] [2020-12-23 07:39:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:06,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:39:06,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:06,981 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 07:39:06,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130074927] [2020-12-23 07:39:06,982 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:06,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967552506] [2020-12-23 07:39:06,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:06,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:39:06,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722160780] [2020-12-23 07:39:06,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:39:06,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:06,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:39:06,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:06,984 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 7 states. [2020-12-23 07:39:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:07,209 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2020-12-23 07:39:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:39:07,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-23 07:39:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:07,211 INFO L225 Difference]: With dead ends: 165 [2020-12-23 07:39:07,212 INFO L226 Difference]: Without dead ends: 157 [2020-12-23 07:39:07,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:39:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-12-23 07:39:07,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 109. [2020-12-23 07:39:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 07:39:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2020-12-23 07:39:07,233 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 30 [2020-12-23 07:39:07,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:07,233 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2020-12-23 07:39:07,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:39:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2020-12-23 07:39:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:39:07,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:07,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:07,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:07,469 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:07,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:07,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2020-12-23 07:39:07,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:07,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529487196] [2020-12-23 07:39:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:07,483 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:07,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371119112] [2020-12-23 07:39:07,484 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 07:39:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:07,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:39:07,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:07,729 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 07:39:07,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529487196] [2020-12-23 07:39:07,729 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:07,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371119112] [2020-12-23 07:39:07,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:07,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:39:07,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814800660] [2020-12-23 07:39:07,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:39:07,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:07,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:39:07,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:39:07,732 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand 8 states. [2020-12-23 07:39:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:07,963 INFO L93 Difference]: Finished difference Result 176 states and 211 transitions. [2020-12-23 07:39:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 07:39:07,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-12-23 07:39:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:07,967 INFO L225 Difference]: With dead ends: 176 [2020-12-23 07:39:07,967 INFO L226 Difference]: Without dead ends: 170 [2020-12-23 07:39:07,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:39:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-23 07:39:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2020-12-23 07:39:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 194 transitions. [2020-12-23 07:39:08,010 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 194 transitions. Word has length 32 [2020-12-23 07:39:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:08,012 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 194 transitions. [2020-12-23 07:39:08,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:39:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 194 transitions. [2020-12-23 07:39:08,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:39:08,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:08,016 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:08,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:39:08,230 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:08,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2020-12-23 07:39:08,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:08,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074959256] [2020-12-23 07:39:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:08,245 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:08,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [173817891] [2020-12-23 07:39:08,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:08,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-23 07:39:08,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:08,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074959256] [2020-12-23 07:39:08,865 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:08,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173817891] [2020-12-23 07:39:08,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:08,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:39:08,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39675042] [2020-12-23 07:39:08,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:39:08,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:08,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:39:08,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:39:08,867 INFO L87 Difference]: Start difference. First operand 157 states and 194 transitions. Second operand 16 states. [2020-12-23 07:39:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:09,664 INFO L93 Difference]: Finished difference Result 167 states and 200 transitions. [2020-12-23 07:39:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 07:39:09,665 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 34 [2020-12-23 07:39:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:09,666 INFO L225 Difference]: With dead ends: 167 [2020-12-23 07:39:09,666 INFO L226 Difference]: Without dead ends: 165 [2020-12-23 07:39:09,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-12-23 07:39:09,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-12-23 07:39:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2020-12-23 07:39:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2020-12-23 07:39:09,686 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 34 [2020-12-23 07:39:09,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:09,687 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2020-12-23 07:39:09,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:39:09,687 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2020-12-23 07:39:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:39:09,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:09,688 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:09,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:09,904 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:09,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:09,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2020-12-23 07:39:09,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:09,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587649242] [2020-12-23 07:39:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:09,918 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:09,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639850001] [2020-12-23 07:39:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:10,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 58 conjunts are in the unsatisfiable core [2020-12-23 07:39:10,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:10,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587649242] [2020-12-23 07:39:10,934 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:10,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639850001] [2020-12-23 07:39:10,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:10,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-23 07:39:10,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248883930] [2020-12-23 07:39:10,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 07:39:10,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:10,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 07:39:10,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:39:10,936 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand 18 states. [2020-12-23 07:39:11,309 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-12-23 07:39:11,502 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-12-23 07:39:11,690 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-12-23 07:39:12,022 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36 [2020-12-23 07:39:12,165 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-12-23 07:39:12,366 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-12-23 07:39:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:12,454 INFO L93 Difference]: Finished difference Result 164 states and 197 transitions. [2020-12-23 07:39:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 07:39:12,455 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-12-23 07:39:12,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:12,457 INFO L225 Difference]: With dead ends: 164 [2020-12-23 07:39:12,457 INFO L226 Difference]: Without dead ends: 161 [2020-12-23 07:39:12,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2020-12-23 07:39:12,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-23 07:39:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2020-12-23 07:39:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-23 07:39:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 182 transitions. [2020-12-23 07:39:12,480 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 182 transitions. Word has length 36 [2020-12-23 07:39:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:12,481 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 182 transitions. [2020-12-23 07:39:12,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 07:39:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 182 transitions. [2020-12-23 07:39:12,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-23 07:39:12,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:12,486 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:12,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:12,699 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:12,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:12,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2020-12-23 07:39:12,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:12,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572924796] [2020-12-23 07:39:12,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:12,718 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:12,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658907128] [2020-12-23 07:39:12,718 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 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 07:39:12,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:12,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:12,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 07:39:12,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:13,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572924796] [2020-12-23 07:39:13,398 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:13,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658907128] [2020-12-23 07:39:13,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:13,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:39:13,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53376001] [2020-12-23 07:39:13,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:39:13,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:13,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:39:13,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:39:13,401 INFO L87 Difference]: Start difference. First operand 155 states and 182 transitions. Second operand 16 states. [2020-12-23 07:39:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:14,075 INFO L93 Difference]: Finished difference Result 234 states and 274 transitions. [2020-12-23 07:39:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:39:14,076 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-12-23 07:39:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:14,077 INFO L225 Difference]: With dead ends: 234 [2020-12-23 07:39:14,077 INFO L226 Difference]: Without dead ends: 163 [2020-12-23 07:39:14,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:39:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-23 07:39:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2020-12-23 07:39:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-23 07:39:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 188 transitions. [2020-12-23 07:39:14,102 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 188 transitions. Word has length 36 [2020-12-23 07:39:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:14,103 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 188 transitions. [2020-12-23 07:39:14,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:39:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 188 transitions. [2020-12-23 07:39:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-23 07:39:14,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:14,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:14,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:39:14,317 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2020-12-23 07:39:14,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:14,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125297020] [2020-12-23 07:39:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:14,340 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:14,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424821294] [2020-12-23 07:39:14,341 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 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 07:39:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:14,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 07:39:14,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:14,825 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 07:39:14,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125297020] [2020-12-23 07:39:14,825 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:14,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424821294] [2020-12-23 07:39:14,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:14,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-23 07:39:14,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305927675] [2020-12-23 07:39:14,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-23 07:39:14,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:14,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-23 07:39:14,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-23 07:39:14,828 INFO L87 Difference]: Start difference. First operand 162 states and 188 transitions. Second operand 13 states. [2020-12-23 07:39:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:15,494 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2020-12-23 07:39:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 07:39:15,495 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-12-23 07:39:15,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:15,497 INFO L225 Difference]: With dead ends: 194 [2020-12-23 07:39:15,497 INFO L226 Difference]: Without dead ends: 188 [2020-12-23 07:39:15,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2020-12-23 07:39:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-23 07:39:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2020-12-23 07:39:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-12-23 07:39:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2020-12-23 07:39:15,523 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 39 [2020-12-23 07:39:15,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:15,523 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2020-12-23 07:39:15,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-23 07:39:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2020-12-23 07:39:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-23 07:39:15,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:15,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:15,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:39:15,738 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:15,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:15,739 INFO L82 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2020-12-23 07:39:15,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:15,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450796338] [2020-12-23 07:39:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:15,750 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:15,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228259498] [2020-12-23 07:39:15,751 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:15,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:15,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:15,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:39:15,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:15,921 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:15,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450796338] [2020-12-23 07:39:15,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:15,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228259498] [2020-12-23 07:39:15,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:39:15,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:39:15,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066601479] [2020-12-23 07:39:15,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:39:15,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:15,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:39:15,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:39:15,924 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand 5 states. [2020-12-23 07:39:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:16,026 INFO L93 Difference]: Finished difference Result 238 states and 273 transitions. [2020-12-23 07:39:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:39:16,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-23 07:39:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:16,028 INFO L225 Difference]: With dead ends: 238 [2020-12-23 07:39:16,028 INFO L226 Difference]: Without dead ends: 166 [2020-12-23 07:39:16,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:39:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-23 07:39:16,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 127. [2020-12-23 07:39:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-23 07:39:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 139 transitions. [2020-12-23 07:39:16,048 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 139 transitions. Word has length 44 [2020-12-23 07:39:16,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:16,048 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 139 transitions. [2020-12-23 07:39:16,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:39:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 139 transitions. [2020-12-23 07:39:16,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 07:39:16,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:16,049 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:16,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:39:16,264 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:16,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:16,265 INFO L82 PathProgramCache]: Analyzing trace with hash 915495927, now seen corresponding path program 1 times [2020-12-23 07:39:16,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:16,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382854805] [2020-12-23 07:39:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:16,276 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:16,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1607594450] [2020-12-23 07:39:16,276 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:39:16,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 68 conjunts are in the unsatisfiable core [2020-12-23 07:39:16,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:17,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382854805] [2020-12-23 07:39:17,096 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:17,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607594450] [2020-12-23 07:39:17,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:17,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-23 07:39:17,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254422246] [2020-12-23 07:39:17,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-23 07:39:17,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:17,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-23 07:39:17,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:39:17,098 INFO L87 Difference]: Start difference. First operand 127 states and 139 transitions. Second operand 18 states. [2020-12-23 07:39:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:18,374 INFO L93 Difference]: Finished difference Result 204 states and 224 transitions. [2020-12-23 07:39:18,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-23 07:39:18,375 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-12-23 07:39:18,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:18,376 INFO L225 Difference]: With dead ends: 204 [2020-12-23 07:39:18,376 INFO L226 Difference]: Without dead ends: 158 [2020-12-23 07:39:18,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2020-12-23 07:39:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-23 07:39:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-12-23 07:39:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 07:39:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2020-12-23 07:39:18,429 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 48 [2020-12-23 07:39:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:18,429 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2020-12-23 07:39:18,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-23 07:39:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2020-12-23 07:39:18,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 07:39:18,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:18,430 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:18,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:18,645 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:18,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2020-12-23 07:39:18,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:18,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797478643] [2020-12-23 07:39:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:18,656 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:18,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684970749] [2020-12-23 07:39:18,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:18,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:18,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:18,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-23 07:39:18,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:39:19,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797478643] [2020-12-23 07:39:19,455 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:19,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684970749] [2020-12-23 07:39:19,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:19,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-23 07:39:19,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921580191] [2020-12-23 07:39:19,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-23 07:39:19,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:19,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-23 07:39:19,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:39:19,457 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand 16 states. [2020-12-23 07:39:20,080 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-23 07:39:20,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:20,454 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2020-12-23 07:39:20,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 07:39:20,459 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2020-12-23 07:39:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:20,460 INFO L225 Difference]: With dead ends: 194 [2020-12-23 07:39:20,461 INFO L226 Difference]: Without dead ends: 123 [2020-12-23 07:39:20,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-12-23 07:39:20,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-23 07:39:20,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-12-23 07:39:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-23 07:39:20,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 129 transitions. [2020-12-23 07:39:20,479 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 129 transitions. Word has length 48 [2020-12-23 07:39:20,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:20,479 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 129 transitions. [2020-12-23 07:39:20,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-23 07:39:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 129 transitions. [2020-12-23 07:39:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 07:39:20,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:20,480 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:20,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:39:20,696 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1242137129, now seen corresponding path program 2 times [2020-12-23 07:39:20,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:20,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92511700] [2020-12-23 07:39:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:20,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:20,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521922174] [2020-12-23 07:39:20,708 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:20,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:39:20,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:20,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-23 07:39:20,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-23 07:39:20,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92511700] [2020-12-23 07:39:20,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:39:20,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521922174] [2020-12-23 07:39:20,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:39:20,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:39:20,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668658811] [2020-12-23 07:39:20,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:39:20,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:39:20,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:39:20,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:39:20,958 INFO L87 Difference]: Start difference. First operand 123 states and 129 transitions. Second operand 9 states. [2020-12-23 07:39:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:39:21,255 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2020-12-23 07:39:21,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:39:21,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-12-23 07:39:21,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:39:21,257 INFO L225 Difference]: With dead ends: 160 [2020-12-23 07:39:21,257 INFO L226 Difference]: Without dead ends: 91 [2020-12-23 07:39:21,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:39:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-23 07:39:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-23 07:39:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-23 07:39:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2020-12-23 07:39:21,283 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 57 [2020-12-23 07:39:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:39:21,283 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2020-12-23 07:39:21,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:39:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2020-12-23 07:39:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-23 07:39:21,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:39:21,284 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:39:21,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:39:21,499 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:39:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:39:21,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1543957594, now seen corresponding path program 3 times [2020-12-23 07:39:21,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:39:21,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572086319] [2020-12-23 07:39:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:39:21,518 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:39:21,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068657296] [2020-12-23 07:39:21,519 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:39:21,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:39:21,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:39:21,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 59 conjunts are in the unsatisfiable core [2020-12-23 07:39:21,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:39:22,487 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:39:39,775 WARN L197 SmtUtils]: Spent 12.90 s on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-12-23 07:39:40,024 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:39:40,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:39:40,080 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:39:40,152 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:39:40,169 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:39:40,204 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-23 07:39:57,175 WARN L197 SmtUtils]: Spent 10.27 s on a formula simplification that was a NOOP. DAG size: 45 [2020-12-23 07:40:04,445 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~q~0 Int) (ULTIMATE.start_main_~s~0 Int) (ULTIMATE.start_main_~r~0 Int) (v_prenex_1 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int) (ULTIMATE.start_main_~k~0 Int)) (let ((.cse0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0))) (and (not (= ULTIMATE.start_main_~k~0 0)) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2) (not (= (+ .cse0 .cse1) 0)) (<= 1 ULTIMATE.start_main_~x~0) (= (mod (+ (* (+ ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) (* (+ ULTIMATE.start_main_~q~0 (* v_prenex_1 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0) (= (div (+ .cse0 .cse1 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* v_prenex_1 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~k~0) (+ (* v_prenex_1 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~y~0 2)))) is different from false [2020-12-23 07:40:06,454 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~q~0 Int) (ULTIMATE.start_main_~s~0 Int) (ULTIMATE.start_main_~r~0 Int) (v_prenex_1 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int) (ULTIMATE.start_main_~k~0 Int)) (let ((.cse0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0))) (and (not (= ULTIMATE.start_main_~k~0 0)) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2) (not (= (+ .cse0 .cse1) 0)) (<= 1 ULTIMATE.start_main_~x~0) (= (mod (+ (* (+ ULTIMATE.start_main_~s~0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0) (* (+ ULTIMATE.start_main_~q~0 (* v_prenex_1 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~k~0) 0) (= (div (+ .cse0 .cse1 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* v_prenex_1 ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~k~0) (+ (* v_prenex_1 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~y~0 2)))) is different from true [2020-12-23 07:40:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-23 07:40:06,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572086319] [2020-12-23 07:40:06,480 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:40:06,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068657296] [2020-12-23 07:40:06,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:40:06,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-23 07:40:06,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984464198] [2020-12-23 07:40:06,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-23 07:40:06,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:40:06,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-23 07:40:06,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=4, NotChecked=34, Total=380 [2020-12-23 07:40:06,483 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand 20 states. [2020-12-23 07:40:15,781 WARN L197 SmtUtils]: Spent 8.50 s on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-23 07:40:22,704 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 58 [2020-12-23 07:40:44,091 WARN L197 SmtUtils]: Spent 10.19 s on a formula simplification that was a NOOP. DAG size: 54 [2020-12-23 07:41:02,198 WARN L197 SmtUtils]: Spent 6.76 s on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-23 07:41:19,740 WARN L197 SmtUtils]: Spent 9.44 s on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2020-12-23 07:41:37,479 WARN L197 SmtUtils]: Spent 6.28 s on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-23 07:42:17,393 WARN L197 SmtUtils]: Spent 8.60 s on a formula simplification. DAG size of input: 56 DAG size of output: 18 [2020-12-23 07:42:52,818 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 50 [2020-12-23 07:43:18,177 WARN L197 SmtUtils]: Spent 16.47 s on a formula simplification that was a NOOP. DAG size: 60