/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/egcd-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:17:49,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:17:49,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:17:49,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:17:49,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:17:49,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:17:49,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:17:49,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:17:49,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:17:49,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:17:49,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:17:49,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:17:49,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:17:49,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:17:49,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:17:49,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:17:50,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:17:50,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:17:50,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:17:50,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:17:50,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:17:50,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:17:50,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:17:50,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:17:50,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:17:50,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:17:50,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:17:50,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:17:50,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:17:50,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:17:50,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:17:50,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:17:50,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:17:50,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:17:50,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:17:50,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:17:50,069 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 07:17:50,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:17:50,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:17:50,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:17:50,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:17:50,122 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:17:50,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:17:50,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:17:50,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:17:50,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:17:50,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:17:50,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:17:50,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:17:50,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:17:50,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:17:50,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:17:50,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:17:50,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:17:50,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:17:50,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:17:50,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:17:50,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:17:50,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:17:50,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:17:50,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:17:50,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:17:50,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:17:50,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:17:50,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:17:50,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:17:50,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:17:50,592 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:17:50,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd-ll.c [2020-12-23 07:17:50,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/00fcef5d6/92f8cfd64af942d696eca00bf8d4333b/FLAGb83761dc0 [2020-12-23 07:17:51,303 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:17:51,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd-ll.c [2020-12-23 07:17:51,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/00fcef5d6/92f8cfd64af942d696eca00bf8d4333b/FLAGb83761dc0 [2020-12-23 07:17:51,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/00fcef5d6/92f8cfd64af942d696eca00bf8d4333b [2020-12-23 07:17:51,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:17:51,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:17:51,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:17:51,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:17:51,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:17:51,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:51,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef22edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51, skipping insertion in model container [2020-12-23 07:17:51,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:51,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:17:51,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:17:51,875 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/egcd-ll.c[489,502] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:17:51,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:17:51,909 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:17:51,924 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/egcd-ll.c[489,502] 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[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~s~0,] [2020-12-23 07:17:51,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:17:51,950 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:17:51,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51 WrapperNode [2020-12-23 07:17:51,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:17:51,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:17:51,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:17:51,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:17:51,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:51,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:51,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:17:51,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:17:51,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:17:51,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:17:52,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:52,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:52,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:52,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:52,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:52,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:52,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (1/1) ... [2020-12-23 07:17:52,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:17:52,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:17:52,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:17:52,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:17:52,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (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 07:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:17:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:17:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:17:52,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:17:52,550 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-23 07:17:52,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:17:52 BoogieIcfgContainer [2020-12-23 07:17:52,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:17:52,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:17:52,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:17:52,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:17:52,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:17:51" (1/3) ... [2020-12-23 07:17:52,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cca7759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:17:52, skipping insertion in model container [2020-12-23 07:17:52,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:17:51" (2/3) ... [2020-12-23 07:17:52,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cca7759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:17:52, skipping insertion in model container [2020-12-23 07:17:52,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:17:52" (3/3) ... [2020-12-23 07:17:52,569 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2020-12-23 07:17:52,577 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:17:52,583 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-23 07:17:52,607 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-23 07:17:52,650 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:17:52,650 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:17:52,656 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:17:52,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:17:52,657 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:17:52,657 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:17:52,657 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:17:52,657 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:17:52,676 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-23 07:17:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:17:52,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:52,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:52,706 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:52,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:52,721 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-12-23 07:17:52,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:52,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202120450] [2020-12-23 07:17:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:52,938 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 07:17:52,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202120450] [2020-12-23 07:17:52,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:52,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:17:52,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625614104] [2020-12-23 07:17:52,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:17:52,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:52,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:17:52,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:17:52,975 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-12-23 07:17:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:53,009 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2020-12-23 07:17:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:17:53,010 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-23 07:17:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:53,035 INFO L225 Difference]: With dead ends: 77 [2020-12-23 07:17:53,035 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 07:17:53,049 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 07:17:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 07:17:53,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-23 07:17:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 07:17:53,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-23 07:17:53,104 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 9 [2020-12-23 07:17:53,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:53,104 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-23 07:17:53,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:17:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-23 07:17:53,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:17:53,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:53,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:53,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:17:53,109 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:53,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:53,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-12-23 07:17:53,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:53,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037808544] [2020-12-23 07:17:53,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:53,167 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:53,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276617032] [2020-12-23 07:17:53,168 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 07:17:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:53,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:17:53,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:53,368 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 07:17:53,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037808544] [2020-12-23 07:17:53,369 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:53,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276617032] [2020-12-23 07:17:53,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:53,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:17:53,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986537293] [2020-12-23 07:17:53,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:17:53,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:53,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:17:53,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:17:53,373 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-12-23 07:17:53,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:53,508 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-12-23 07:17:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:17:53,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-23 07:17:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:53,510 INFO L225 Difference]: With dead ends: 66 [2020-12-23 07:17:53,511 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 07:17:53,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:17:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 07:17:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2020-12-23 07:17:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 07:17:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-12-23 07:17:53,525 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 9 [2020-12-23 07:17:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:53,525 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-12-23 07:17:53,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:17:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-12-23 07:17:53,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:17:53,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:53,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:53,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:17:53,742 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:53,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:53,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1503476777, now seen corresponding path program 1 times [2020-12-23 07:17:53,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:53,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525013512] [2020-12-23 07:17:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:53,762 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:53,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240385529] [2020-12-23 07:17:53,762 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 07:17:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:17:53,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:53,939 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 07:17:53,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525013512] [2020-12-23 07:17:53,940 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:53,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240385529] [2020-12-23 07:17:53,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:53,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:17:53,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787377328] [2020-12-23 07:17:53,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:17:53,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:53,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:17:53,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:17:53,946 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 6 states. [2020-12-23 07:17:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:54,087 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-12-23 07:17:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:17:54,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 07:17:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:54,091 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:17:54,091 INFO L226 Difference]: Without dead ends: 92 [2020-12-23 07:17:54,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:17:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-23 07:17:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 66. [2020-12-23 07:17:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:17:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-12-23 07:17:54,107 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 11 [2020-12-23 07:17:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:54,108 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-12-23 07:17:54,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:17:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-12-23 07:17:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:17:54,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:54,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:54,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:54,324 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:54,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1732014918, now seen corresponding path program 1 times [2020-12-23 07:17:54,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:54,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789883765] [2020-12-23 07:17:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:54,343 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:54,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267686080] [2020-12-23 07:17:54,343 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 07:17:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:54,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:17:54,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:54,494 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 07:17:54,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789883765] [2020-12-23 07:17:54,495 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:54,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267686080] [2020-12-23 07:17:54,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:54,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:17:54,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405922100] [2020-12-23 07:17:54,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:17:54,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:54,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:17:54,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:17:54,500 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 6 states. [2020-12-23 07:17:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:54,646 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-12-23 07:17:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:17:54,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-23 07:17:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:54,651 INFO L225 Difference]: With dead ends: 80 [2020-12-23 07:17:54,652 INFO L226 Difference]: Without dead ends: 72 [2020-12-23 07:17:54,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:17:54,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-23 07:17:54,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-12-23 07:17:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:17:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-12-23 07:17:54,682 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 13 [2020-12-23 07:17:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:54,683 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-12-23 07:17:54,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:17:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-12-23 07:17:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:17:54,684 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:54,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:54,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:54,900 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:54,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:54,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1285599533, now seen corresponding path program 1 times [2020-12-23 07:17:54,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:54,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877390118] [2020-12-23 07:17:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:54,922 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:54,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439364599] [2020-12-23 07:17:54,923 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 07:17:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:54,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-23 07:17:54,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:54,995 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 07:17:54,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877390118] [2020-12-23 07:17:54,996 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:54,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439364599] [2020-12-23 07:17:54,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:54,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:17:54,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738122734] [2020-12-23 07:17:54,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:17:54,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:17:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:17:54,999 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 4 states. [2020-12-23 07:17:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:55,045 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-12-23 07:17:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:17:55,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-23 07:17:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:55,047 INFO L225 Difference]: With dead ends: 64 [2020-12-23 07:17:55,047 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 07:17:55,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:17:55,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 07:17:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-23 07:17:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 07:17:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-12-23 07:17:55,057 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 16 [2020-12-23 07:17:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:55,057 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-12-23 07:17:55,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:17:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-12-23 07:17:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:17:55,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:55,059 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:55,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:55,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:55,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:55,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1200528407, now seen corresponding path program 1 times [2020-12-23 07:17:55,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:55,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896935905] [2020-12-23 07:17:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:55,296 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:55,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869091419] [2020-12-23 07:17:55,296 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 07:17:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:55,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:17:55,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:55,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 07:17:55,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896935905] [2020-12-23 07:17:55,441 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:55,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869091419] [2020-12-23 07:17:55,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:55,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:17:55,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581820402] [2020-12-23 07:17:55,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:17:55,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:55,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:17:55,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:17:55,451 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 5 states. [2020-12-23 07:17:55,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:55,548 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2020-12-23 07:17:55,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:17:55,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 07:17:55,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:55,550 INFO L225 Difference]: With dead ends: 84 [2020-12-23 07:17:55,550 INFO L226 Difference]: Without dead ends: 80 [2020-12-23 07:17:55,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:17:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-23 07:17:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2020-12-23 07:17:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 07:17:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2020-12-23 07:17:55,558 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 17 [2020-12-23 07:17:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:55,559 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2020-12-23 07:17:55,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:17:55,559 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2020-12-23 07:17:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:17:55,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:55,560 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 07:17:55,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 07:17:55,775 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:55,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:55,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1489272560, now seen corresponding path program 1 times [2020-12-23 07:17:55,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:55,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421214489] [2020-12-23 07:17:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:55,789 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:55,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376001311] [2020-12-23 07:17:55,790 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 07:17:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:55,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-23 07:17:55,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:55,937 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 07:17:55,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421214489] [2020-12-23 07:17:55,937 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:55,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376001311] [2020-12-23 07:17:55,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:17:55,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-23 07:17:55,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206504012] [2020-12-23 07:17:55,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:17:55,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:55,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:17:55,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:17:55,940 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand 8 states. [2020-12-23 07:17:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:56,109 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-12-23 07:17:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:17:56,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-23 07:17:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:56,110 INFO L225 Difference]: With dead ends: 76 [2020-12-23 07:17:56,110 INFO L226 Difference]: Without dead ends: 68 [2020-12-23 07:17:56,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:17:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-23 07:17:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-12-23 07:17:56,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-23 07:17:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-12-23 07:17:56,121 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 18 [2020-12-23 07:17:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:56,121 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-12-23 07:17:56,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:17:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-12-23 07:17:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 07:17:56,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:56,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:56,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:56,336 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1695505828, now seen corresponding path program 1 times [2020-12-23 07:17:56,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:56,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895600607] [2020-12-23 07:17:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:56,350 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:56,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455967160] [2020-12-23 07:17:56,351 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 07:17:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:56,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:17:56,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:17:56,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895600607] [2020-12-23 07:17:56,615 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:56,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455967160] [2020-12-23 07:17:56,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:56,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:17:56,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558230553] [2020-12-23 07:17:56,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:17:56,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:56,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:17:56,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:17:56,622 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 9 states. [2020-12-23 07:17:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:57,076 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2020-12-23 07:17:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:17:57,077 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-12-23 07:17:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:57,078 INFO L225 Difference]: With dead ends: 101 [2020-12-23 07:17:57,078 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 07:17:57,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-12-23 07:17:57,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 07:17:57,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2020-12-23 07:17:57,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-23 07:17:57,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-12-23 07:17:57,089 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 19 [2020-12-23 07:17:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:57,089 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-12-23 07:17:57,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:17:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-12-23 07:17:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 07:17:57,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:57,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:57,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:57,305 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:57,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:57,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1897281469, now seen corresponding path program 1 times [2020-12-23 07:17:57,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:57,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502935595] [2020-12-23 07:17:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:57,328 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:57,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110976037] [2020-12-23 07:17:57,328 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 07:17:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:57,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-23 07:17:57,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:57,553 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 07:17:57,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502935595] [2020-12-23 07:17:57,553 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:57,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110976037] [2020-12-23 07:17:57,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:57,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:17:57,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258965475] [2020-12-23 07:17:57,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:17:57,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:57,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:17:57,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:17:57,555 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 8 states. [2020-12-23 07:17:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:57,762 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2020-12-23 07:17:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:17:57,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-23 07:17:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:57,764 INFO L225 Difference]: With dead ends: 112 [2020-12-23 07:17:57,764 INFO L226 Difference]: Without dead ends: 100 [2020-12-23 07:17:57,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:17:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-23 07:17:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2020-12-23 07:17:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 07:17:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2020-12-23 07:17:57,778 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 21 [2020-12-23 07:17:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:57,778 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2020-12-23 07:17:57,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:17:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2020-12-23 07:17:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:17:57,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:57,779 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:57,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-23 07:17:57,994 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:57,995 INFO L82 PathProgramCache]: Analyzing trace with hash 22725340, now seen corresponding path program 1 times [2020-12-23 07:17:57,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:57,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886690040] [2020-12-23 07:17:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:58,007 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:58,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809511483] [2020-12-23 07:17:58,008 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 07:17:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:17:58,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:17:58,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:17:58,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886690040] [2020-12-23 07:17:58,226 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:58,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809511483] [2020-12-23 07:17:58,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:58,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:17:58,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757057218] [2020-12-23 07:17:58,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:17:58,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:58,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:17:58,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:17:58,228 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand 8 states. [2020-12-23 07:17:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:58,510 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2020-12-23 07:17:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:17:58,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-23 07:17:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:58,512 INFO L225 Difference]: With dead ends: 120 [2020-12-23 07:17:58,512 INFO L226 Difference]: Without dead ends: 116 [2020-12-23 07:17:58,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:17:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-23 07:17:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2020-12-23 07:17:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-23 07:17:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2020-12-23 07:17:58,527 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 25 [2020-12-23 07:17:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:58,528 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2020-12-23 07:17:58,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:17:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2020-12-23 07:17:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 07:17:58,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:58,529 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:58,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:58,743 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:58,744 INFO L82 PathProgramCache]: Analyzing trace with hash 280831196, now seen corresponding path program 2 times [2020-12-23 07:17:58,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:58,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346790482] [2020-12-23 07:17:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:58,754 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:58,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511610177] [2020-12-23 07:17:58,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:58,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:17:58,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:17:58,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:17:58,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:17:58,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346790482] [2020-12-23 07:17:58,961 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:58,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511610177] [2020-12-23 07:17:58,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:58,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:17:58,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802182253] [2020-12-23 07:17:58,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:17:58,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:58,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:17:58,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:17:58,963 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 9 states. [2020-12-23 07:17:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:17:59,291 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2020-12-23 07:17:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:17:59,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-23 07:17:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:17:59,292 INFO L225 Difference]: With dead ends: 123 [2020-12-23 07:17:59,293 INFO L226 Difference]: Without dead ends: 113 [2020-12-23 07:17:59,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:17:59,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-23 07:17:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2020-12-23 07:17:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-23 07:17:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-12-23 07:17:59,308 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 25 [2020-12-23 07:17:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:17:59,308 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-12-23 07:17:59,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:17:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-12-23 07:17:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:17:59,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:17:59,309 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:17:59,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:17:59,523 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:17:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:17:59,524 INFO L82 PathProgramCache]: Analyzing trace with hash 307112929, now seen corresponding path program 2 times [2020-12-23 07:17:59,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:17:59,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89404379] [2020-12-23 07:17:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:17:59,540 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:17:59,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95375792] [2020-12-23 07:17:59,541 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 07:17:59,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:17:59,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:17:59,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 56 conjunts are in the unsatisfiable core [2020-12-23 07:17:59,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:17:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:17:59,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89404379] [2020-12-23 07:17:59,855 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:17:59,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95375792] [2020-12-23 07:17:59,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:17:59,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:17:59,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285823916] [2020-12-23 07:17:59,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:17:59,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:17:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:17:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:17:59,857 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 10 states. [2020-12-23 07:18:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:00,348 INFO L93 Difference]: Finished difference Result 144 states and 163 transitions. [2020-12-23 07:18:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:18:00,348 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-12-23 07:18:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:00,349 INFO L225 Difference]: With dead ends: 144 [2020-12-23 07:18:00,349 INFO L226 Difference]: Without dead ends: 142 [2020-12-23 07:18:00,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-12-23 07:18:00,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-23 07:18:00,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 114. [2020-12-23 07:18:00,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-23 07:18:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-12-23 07:18:00,367 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 27 [2020-12-23 07:18:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:00,367 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-12-23 07:18:00,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:18:00,367 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-12-23 07:18:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 07:18:00,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:00,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:00,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:18:00,583 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:00,584 INFO L82 PathProgramCache]: Analyzing trace with hash -704004321, now seen corresponding path program 1 times [2020-12-23 07:18:00,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:00,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373987314] [2020-12-23 07:18:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:00,595 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:00,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369960009] [2020-12-23 07:18:00,595 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 07:18:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:18:00,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 07:18:00,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:00,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373987314] [2020-12-23 07:18:00,838 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:00,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369960009] [2020-12-23 07:18:00,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:00,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:18:00,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918429469] [2020-12-23 07:18:00,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:18:00,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:00,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:18:00,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:18:00,840 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 9 states. [2020-12-23 07:18:01,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:01,172 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2020-12-23 07:18:01,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:18:01,173 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-23 07:18:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:01,174 INFO L225 Difference]: With dead ends: 142 [2020-12-23 07:18:01,174 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 07:18:01,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:18:01,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 07:18:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2020-12-23 07:18:01,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-23 07:18:01,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-12-23 07:18:01,188 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 27 [2020-12-23 07:18:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:01,189 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-12-23 07:18:01,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:18:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-12-23 07:18:01,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:18:01,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:01,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:01,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 07:18:01,404 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:01,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2026408958, now seen corresponding path program 1 times [2020-12-23 07:18:01,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:01,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593241818] [2020-12-23 07:18:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:01,417 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:01,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [285622183] [2020-12-23 07:18:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:18:01,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 55 conjunts are in the unsatisfiable core [2020-12-23 07:18:01,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:01,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593241818] [2020-12-23 07:18:01,767 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:01,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285622183] [2020-12-23 07:18:01,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:01,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:18:01,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268248024] [2020-12-23 07:18:01,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:18:01,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:01,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:18:01,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:18:01,770 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 11 states. [2020-12-23 07:18:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:02,179 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2020-12-23 07:18:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 07:18:02,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-12-23 07:18:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:02,181 INFO L225 Difference]: With dead ends: 150 [2020-12-23 07:18:02,181 INFO L226 Difference]: Without dead ends: 136 [2020-12-23 07:18:02,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-23 07:18:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-23 07:18:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 107. [2020-12-23 07:18:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 07:18:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-12-23 07:18:02,196 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 29 [2020-12-23 07:18:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:02,196 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-12-23 07:18:02,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:18:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-12-23 07:18:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:18:02,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:02,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:02,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-23 07:18:02,414 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:02,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:02,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1247489984, now seen corresponding path program 2 times [2020-12-23 07:18:02,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:02,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973555975] [2020-12-23 07:18:02,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:02,424 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:02,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880980767] [2020-12-23 07:18:02,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:02,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:18:02,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:02,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-23 07:18:02,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:02,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973555975] [2020-12-23 07:18:02,703 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:02,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880980767] [2020-12-23 07:18:02,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:02,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 07:18:02,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745819653] [2020-12-23 07:18:02,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:18:02,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:02,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:18:02,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:18:02,705 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 8 states. [2020-12-23 07:18:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:02,899 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2020-12-23 07:18:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:18:02,899 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-23 07:18:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:02,900 INFO L225 Difference]: With dead ends: 150 [2020-12-23 07:18:02,900 INFO L226 Difference]: Without dead ends: 138 [2020-12-23 07:18:02,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:18:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-23 07:18:02,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 115. [2020-12-23 07:18:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-23 07:18:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-12-23 07:18:02,915 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 29 [2020-12-23 07:18:02,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:02,915 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-12-23 07:18:02,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:18:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-12-23 07:18:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:18:02,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:02,916 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:03,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:03,132 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:03,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:03,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1883919521, now seen corresponding path program 3 times [2020-12-23 07:18:03,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:03,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019850912] [2020-12-23 07:18:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:03,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:03,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1398626912] [2020-12-23 07:18:03,150 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 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 07:18:03,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-23 07:18:03,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:03,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-23 07:18:03,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:05,969 WARN L197 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-23 07:18:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-23 07:18:05,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019850912] [2020-12-23 07:18:05,994 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:05,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398626912] [2020-12-23 07:18:05,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:05,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:18:05,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383567677] [2020-12-23 07:18:05,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:18:05,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:05,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:18:05,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:18:05,996 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 10 states. [2020-12-23 07:18:07,011 WARN L197 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2020-12-23 07:18:09,962 WARN L197 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-12-23 07:18:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:10,866 INFO L93 Difference]: Finished difference Result 149 states and 165 transitions. [2020-12-23 07:18:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:18:10,866 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-23 07:18:10,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:10,868 INFO L225 Difference]: With dead ends: 149 [2020-12-23 07:18:10,868 INFO L226 Difference]: Without dead ends: 145 [2020-12-23 07:18:10,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:18:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-23 07:18:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-12-23 07:18:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-23 07:18:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2020-12-23 07:18:10,886 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 33 [2020-12-23 07:18:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:10,886 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2020-12-23 07:18:10,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:18:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2020-12-23 07:18:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:18:10,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:10,887 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:11,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:18:11,088 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:11,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2142025377, now seen corresponding path program 4 times [2020-12-23 07:18:11,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:11,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458231310] [2020-12-23 07:18:11,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:11,098 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:11,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223674366] [2020-12-23 07:18:11,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 07:18:11,145 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 07:18:11,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:11,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-23 07:18:11,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:11,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458231310] [2020-12-23 07:18:11,351 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:11,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223674366] [2020-12-23 07:18:11,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:11,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:18:11,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794522394] [2020-12-23 07:18:11,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:18:11,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:11,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:18:11,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:18:11,353 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand 9 states. [2020-12-23 07:18:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:11,947 INFO L93 Difference]: Finished difference Result 150 states and 169 transitions. [2020-12-23 07:18:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-23 07:18:11,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-12-23 07:18:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:11,950 INFO L225 Difference]: With dead ends: 150 [2020-12-23 07:18:11,951 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 07:18:11,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:18:11,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 07:18:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2020-12-23 07:18:11,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-23 07:18:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2020-12-23 07:18:11,980 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 33 [2020-12-23 07:18:11,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:11,980 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2020-12-23 07:18:11,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:18:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2020-12-23 07:18:11,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:18:11,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:11,983 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:12,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:18:12,196 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:12,196 INFO L82 PathProgramCache]: Analyzing trace with hash 2142084959, now seen corresponding path program 5 times [2020-12-23 07:18:12,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:12,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559869094] [2020-12-23 07:18:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:12,213 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:12,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656310564] [2020-12-23 07:18:12,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 07:18:12,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-23 07:18:12,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:12,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-23 07:18:12,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:12,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559869094] [2020-12-23 07:18:12,563 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:12,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656310564] [2020-12-23 07:18:12,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:12,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:18:12,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662012217] [2020-12-23 07:18:12,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:18:12,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:12,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:18:12,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:18:12,567 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 7 states. [2020-12-23 07:18:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:12,836 INFO L93 Difference]: Finished difference Result 158 states and 178 transitions. [2020-12-23 07:18:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:18:12,837 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-12-23 07:18:12,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:12,838 INFO L225 Difference]: With dead ends: 158 [2020-12-23 07:18:12,838 INFO L226 Difference]: Without dead ends: 154 [2020-12-23 07:18:12,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:18:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-12-23 07:18:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2020-12-23 07:18:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-12-23 07:18:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2020-12-23 07:18:12,863 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 33 [2020-12-23 07:18:12,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:12,863 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2020-12-23 07:18:12,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:18:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2020-12-23 07:18:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:18:12,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:12,865 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:13,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-23 07:18:13,081 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:13,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1066211489, now seen corresponding path program 6 times [2020-12-23 07:18:13,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:13,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637212116] [2020-12-23 07:18:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:13,090 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:13,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018831486] [2020-12-23 07:18:13,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:13,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-23 07:18:13,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:13,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 07:18:13,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:13,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637212116] [2020-12-23 07:18:13,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:13,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018831486] [2020-12-23 07:18:13,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:13,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:18:13,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398422484] [2020-12-23 07:18:13,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:18:13,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:13,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:18:13,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:18:13,332 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 10 states. [2020-12-23 07:18:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:13,789 INFO L93 Difference]: Finished difference Result 158 states and 179 transitions. [2020-12-23 07:18:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:18:13,790 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-23 07:18:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:13,791 INFO L225 Difference]: With dead ends: 158 [2020-12-23 07:18:13,791 INFO L226 Difference]: Without dead ends: 148 [2020-12-23 07:18:13,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:18:13,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-23 07:18:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 138. [2020-12-23 07:18:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-23 07:18:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-12-23 07:18:13,813 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 33 [2020-12-23 07:18:13,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:13,814 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-12-23 07:18:13,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:18:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-12-23 07:18:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:18:13,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:13,815 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:14,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:14,028 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:14,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1066271071, now seen corresponding path program 7 times [2020-12-23 07:18:14,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:14,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328904461] [2020-12-23 07:18:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:14,039 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:14,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079533103] [2020-12-23 07:18:14,039 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:18:14,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-23 07:18:14,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:14,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328904461] [2020-12-23 07:18:14,302 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:14,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079533103] [2020-12-23 07:18:14,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:14,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:18:14,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468324738] [2020-12-23 07:18:14,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:18:14,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:14,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:18:14,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:18:14,304 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 10 states. [2020-12-23 07:18:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:14,775 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2020-12-23 07:18:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:18:14,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-23 07:18:14,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:14,777 INFO L225 Difference]: With dead ends: 162 [2020-12-23 07:18:14,777 INFO L226 Difference]: Without dead ends: 158 [2020-12-23 07:18:14,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:18:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-23 07:18:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 130. [2020-12-23 07:18:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:18:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-12-23 07:18:14,797 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 33 [2020-12-23 07:18:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:14,797 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-12-23 07:18:14,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:18:14,797 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-12-23 07:18:14,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:18:14,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:14,798 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:15,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:15,012 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:15,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:15,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1324376927, now seen corresponding path program 8 times [2020-12-23 07:18:15,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:15,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436133727] [2020-12-23 07:18:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:15,023 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:15,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756726848] [2020-12-23 07:18:15,025 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:15,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:18:15,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:15,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-23 07:18:15,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:18:15,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436133727] [2020-12-23 07:18:15,288 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:15,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756726848] [2020-12-23 07:18:15,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:15,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:18:15,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243002960] [2020-12-23 07:18:15,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:18:15,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:15,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:18:15,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:18:15,290 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 10 states. [2020-12-23 07:18:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:15,762 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2020-12-23 07:18:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-23 07:18:15,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-23 07:18:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:15,764 INFO L225 Difference]: With dead ends: 150 [2020-12-23 07:18:15,764 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 07:18:15,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-12-23 07:18:15,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 07:18:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2020-12-23 07:18:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:18:15,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-12-23 07:18:15,782 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 33 [2020-12-23 07:18:15,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:15,782 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-12-23 07:18:15,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:18:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-12-23 07:18:15,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 07:18:15,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:15,783 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:15,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-23 07:18:15,997 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:15,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2086641562, now seen corresponding path program 3 times [2020-12-23 07:18:15,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:16,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211365403] [2020-12-23 07:18:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:16,008 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:16,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433041833] [2020-12-23 07:18:16,009 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:16,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-23 07:18:16,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:16,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-23 07:18:16,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-23 07:18:16,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211365403] [2020-12-23 07:18:16,237 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:16,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433041833] [2020-12-23 07:18:16,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:18:16,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-23 07:18:16,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547836761] [2020-12-23 07:18:16,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 07:18:16,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:18:16,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 07:18:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:18:16,239 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-12-23 07:18:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:18:24,606 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2020-12-23 07:18:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:18:24,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-12-23 07:18:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:18:24,608 INFO L225 Difference]: With dead ends: 178 [2020-12-23 07:18:24,608 INFO L226 Difference]: Without dead ends: 176 [2020-12-23 07:18:24,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-12-23 07:18:24,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-12-23 07:18:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 126. [2020-12-23 07:18:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-23 07:18:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 144 transitions. [2020-12-23 07:18:24,629 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 144 transitions. Word has length 35 [2020-12-23 07:18:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:18:24,629 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 144 transitions. [2020-12-23 07:18:24,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 07:18:24,629 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 144 transitions. [2020-12-23 07:18:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 07:18:24,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:18:24,630 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:18:24,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 07:18:24,844 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:18:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:18:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1197208484, now seen corresponding path program 2 times [2020-12-23 07:18:24,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:18:24,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116523060] [2020-12-23 07:18:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:18:24,864 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:18:24,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603786418] [2020-12-23 07:18:24,864 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:24,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:18:24,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:18:24,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 58 conjunts are in the unsatisfiable core [2020-12-23 07:18:24,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:18:27,279 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0) (= (+ c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~p~0) 0) (= c_ULTIMATE.start_main_~y~0 (+ c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~b~0)) (= (+ c_ULTIMATE.start_main_~s~0 (* 2 c_ULTIMATE.start_main_~r~0)) 0) (= (+ c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~x~0) (let ((.cse0 (= c_ULTIMATE.start_main_~b~0 (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0))))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (= c_ULTIMATE.start_main_~a~0 (+ (* c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~x~0) (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0))) (<= c_ULTIMATE.start_main_~p~0 1) (< c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0) (not (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0))) is different from false [2020-12-23 07:18:29,295 WARN L838 $PredicateComparison]: unable to prove that (and (<= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0) (= (+ c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~p~0) 0) (= c_ULTIMATE.start_main_~y~0 (+ c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~b~0)) (= (+ c_ULTIMATE.start_main_~s~0 (* 2 c_ULTIMATE.start_main_~r~0)) 0) (= (+ c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0) c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~a~0 (+ (* c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~x~0) (* c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~y~0))) (<= c_ULTIMATE.start_main_~p~0 1) (< c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0) (= c_ULTIMATE.start_main_~b~0 (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~x~0))) (not (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0))) is different from false [2020-12-23 07:18:29,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116523060] [2020-12-23 07:18:29,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:18:29,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603786418] [2020-12-23 07:18:29,316 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-23 07:18:29,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:18:29,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-23 07:18:29,316 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-23 07:18:29,316 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 07:18:29,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:18:29,555 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-23 07:18:29,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 07:18:29 BoogieIcfgContainer [2020-12-23 07:18:29,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 07:18:29,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 07:18:29,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 07:18:29,556 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 07:18:29,556 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:17:52" (3/4) ... [2020-12-23 07:18:29,559 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 07:18:29,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 07:18:29,561 INFO L168 Benchmark]: Toolchain (without parser) took 37884.32 ms. Allocated memory was 173.0 MB in the beginning and 278.9 MB in the end (delta: 105.9 MB). Free memory was 147.8 MB in the beginning and 221.7 MB in the end (delta: -73.9 MB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB. [2020-12-23 07:18:29,561 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 173.0 MB. Free memory is still 145.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:18:29,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.18 ms. Allocated memory is still 173.0 MB. Free memory was 147.5 MB in the beginning and 137.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 07:18:29,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.48 ms. Allocated memory is still 173.0 MB. Free memory was 137.5 MB in the beginning and 135.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:18:29,562 INFO L168 Benchmark]: Boogie Preprocessor took 26.99 ms. Allocated memory is still 173.0 MB. Free memory was 135.8 MB in the beginning and 134.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 07:18:29,563 INFO L168 Benchmark]: RCFGBuilder took 528.07 ms. Allocated memory is still 173.0 MB. Free memory was 134.6 MB in the beginning and 152.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2020-12-23 07:18:29,563 INFO L168 Benchmark]: TraceAbstraction took 36995.63 ms. Allocated memory was 173.0 MB in the beginning and 278.9 MB in the end (delta: 105.9 MB). Free memory was 152.9 MB in the beginning and 222.3 MB in the end (delta: -69.3 MB). Peak memory consumption was 38.1 MB. Max. memory is 8.0 GB. [2020-12-23 07:18:29,564 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 278.9 MB. Free memory is still 221.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 07:18:29,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 173.0 MB. Free memory is still 145.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.18 ms. Allocated memory is still 173.0 MB. Free memory was 147.5 MB in the beginning and 137.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.48 ms. Allocated memory is still 173.0 MB. Free memory was 137.5 MB in the beginning and 135.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.99 ms. Allocated memory is still 173.0 MB. Free memory was 135.8 MB in the beginning and 134.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 528.07 ms. Allocated memory is still 173.0 MB. Free memory was 134.6 MB in the beginning and 152.9 MB in the end (delta: -18.3 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 36995.63 ms. Allocated memory was 173.0 MB in the beginning and 278.9 MB in the end (delta: 105.9 MB). Free memory was 152.9 MB in the beginning and 222.3 MB in the end (delta: -69.3 MB). Peak memory consumption was 38.1 MB. Max. memory is 8.0 GB. * Witness Printer took 3.79 ms. Allocated memory is still 278.9 MB. Free memory is still 221.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] long long a, b, p, q, r, s; [L20] int x, y; [L21] x = __VERIFIER_nondet_int() [L22] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L26] a = x [L27] b = y [L28] p = 1 [L29] q = 0 [L30] r = 0 [L31] s = 1 [L33] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L38] COND FALSE !(!(a != b)) [L41] COND TRUE a > b [L42] a = a - b [L43] p = p - q [L44] r = r - s [L33] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L38] COND FALSE !(!(a != b)) [L41] COND FALSE !(a > b) [L46] b = b - a [L47] q = q - p [L48] s = s - r [L33] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L38] COND FALSE !(!(a != b)) [L41] COND TRUE a > b [L42] a = a - b [L43] p = p - q [L44] r = r - s [L33] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 36.8s, OverallIterations: 23, TraceHistogramMax: 4, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 1443 SDslu, 2074 SDs, 0 SdLazy, 3179 SolverSat, 289 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 11.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 611 GetRequests, 369 SyntacticMatches, 2 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 366 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 528 NumberOfCodeBlocks, 502 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 506 ConstructedInterpolants, 0 QuantifiedInterpolants, 191937 SizeOfPredicates, 225 NumberOfNonLiveVariables, 2250 ConjunctsInSsa, 667 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 49/324 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...