/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:16:45,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:16:45,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:16:45,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:16:45,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:16:45,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:16:45,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:16:45,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:16:45,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:16:45,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:16:45,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:16:45,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:16:45,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:16:45,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:16:45,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:16:45,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:16:45,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:16:45,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:16:45,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:16:45,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:16:45,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:16:45,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:16:45,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:16:45,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:16:45,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:16:45,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:16:45,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:16:45,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:16:45,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:16:45,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:16:45,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:16:45,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:16:45,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:16:45,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:16:45,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:16:45,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:16:45,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:16:45,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:16:45,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:16:45,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:16:45,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:16:45,968 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:16:45,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:16:45,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:16:45,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:16:45,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:16:45,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:16:45,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:16:45,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:16:45,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:16:45,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:16:45,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:16:45,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:16:45,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:16:45,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:16:45,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:16:45,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:16:45,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:16:45,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:16:45,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:16:45,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:16:45,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:16:45,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:16:46,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:16:46,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:16:46,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:16:46,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:16:46,465 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:16:46,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c [2021-01-06 17:16:46,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cebba7fbd/c25bbfa6abe640b99107a9a34484e7db/FLAG88d7d2d22 [2021-01-06 17:16:47,276 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:16:47,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c [2021-01-06 17:16:47,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cebba7fbd/c25bbfa6abe640b99107a9a34484e7db/FLAG88d7d2d22 [2021-01-06 17:16:47,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/cebba7fbd/c25bbfa6abe640b99107a9a34484e7db [2021-01-06 17:16:47,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:16:47,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:16:47,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:16:47,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:16:47,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:16:47,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:47,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b318de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47, skipping insertion in model container [2021-01-06 17:16:47,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:47,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:16:47,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:16:47,831 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 17:16:47,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:16:47,893 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:16:47,912 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c[588,601] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 17:16:47,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:16:47,980 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:16:47,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47 WrapperNode [2021-01-06 17:16:47,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:16:47,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:16:47,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:16:47,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:16:47,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,021 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:16:48,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:16:48,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:16:48,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:16:48,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... [2021-01-06 17:16:48,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:16:48,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:16:48,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:16:48,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:16:48,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:16:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:16:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:16:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:16:48,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:16:48,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:16:48,744 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-01-06 17:16:48,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:16:48 BoogieIcfgContainer [2021-01-06 17:16:48,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:16:48,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:16:48,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:16:48,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:16:48,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:16:47" (1/3) ... [2021-01-06 17:16:48,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7192dd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:16:48, skipping insertion in model container [2021-01-06 17:16:48,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:16:47" (2/3) ... [2021-01-06 17:16:48,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7192dd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:16:48, skipping insertion in model container [2021-01-06 17:16:48,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:16:48" (3/3) ... [2021-01-06 17:16:48,755 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound20.c [2021-01-06 17:16:48,762 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:16:48,766 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2021-01-06 17:16:48,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-01-06 17:16:48,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:16:48,818 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:16:48,818 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:16:48,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:16:48,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:16:48,819 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:16:48,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:16:48,819 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:16:48,838 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-01-06 17:16:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:16:48,844 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:48,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:16:48,845 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:48,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:48,852 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:16:48,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:48,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979706788] [2021-01-06 17:16:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:49,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979706788] [2021-01-06 17:16:49,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:16:49,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:16:49,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539156770] [2021-01-06 17:16:49,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:16:49,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:49,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:16:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:16:49,163 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2021-01-06 17:16:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:49,351 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-01-06 17:16:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:16:49,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:16:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:49,364 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:16:49,364 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 17:16:49,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:16:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 17:16:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-01-06 17:16:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-01-06 17:16:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-01-06 17:16:49,409 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-01-06 17:16:49,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:49,410 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-01-06 17:16:49,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:16:49,410 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-01-06 17:16:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:16:49,411 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:49,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:49,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:16:49,412 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:49,413 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-01-06 17:16:49,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:49,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558965841] [2021-01-06 17:16:49,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:49,440 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:49,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968455638] [2021-01-06 17:16:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:49,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:16:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:49,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558965841] [2021-01-06 17:16:49,673 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:49,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968455638] [2021-01-06 17:16:49,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:16:49,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:16:49,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606487484] [2021-01-06 17:16:49,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:16:49,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:49,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:16:49,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:16:49,678 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2021-01-06 17:16:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:50,009 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2021-01-06 17:16:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:16:50,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-06 17:16:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:50,019 INFO L225 Difference]: With dead ends: 90 [2021-01-06 17:16:50,020 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 17:16:50,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:16:50,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 17:16:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2021-01-06 17:16:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:16:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-01-06 17:16:50,060 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 8 [2021-01-06 17:16:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:50,061 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-01-06 17:16:50,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:16:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-01-06 17:16:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:16:50,062 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:50,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:50,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:16:50,278 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:50,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-01-06 17:16:50,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:50,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103913413] [2021-01-06 17:16:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:50,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103913413] [2021-01-06 17:16:50,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:16:50,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:16:50,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700623970] [2021-01-06 17:16:50,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:16:50,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:50,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:16:50,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:16:50,333 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 4 states. [2021-01-06 17:16:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:50,361 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2021-01-06 17:16:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:16:50,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:16:50,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:50,363 INFO L225 Difference]: With dead ends: 84 [2021-01-06 17:16:50,364 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:16:50,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:16:50,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:16:50,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-01-06 17:16:50,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:16:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-01-06 17:16:50,378 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2021-01-06 17:16:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:50,379 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-01-06 17:16:50,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:16:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-01-06 17:16:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:16:50,379 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:50,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:50,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:16:50,380 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:50,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:50,381 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-01-06 17:16:50,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:50,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861797466] [2021-01-06 17:16:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:50,399 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:50,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976803671] [2021-01-06 17:16:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:50,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:16:50,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:50,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861797466] [2021-01-06 17:16:50,572 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:50,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976803671] [2021-01-06 17:16:50,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:16:50,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:16:50,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251107504] [2021-01-06 17:16:50,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:16:50,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:50,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:16:50,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:16:50,575 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 6 states. [2021-01-06 17:16:50,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:50,779 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-01-06 17:16:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:16:50,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:16:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:50,781 INFO L225 Difference]: With dead ends: 78 [2021-01-06 17:16:50,782 INFO L226 Difference]: Without dead ends: 74 [2021-01-06 17:16:50,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:16:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-06 17:16:50,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2021-01-06 17:16:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-01-06 17:16:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-01-06 17:16:50,794 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2021-01-06 17:16:50,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:50,794 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-01-06 17:16:50,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:16:50,795 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-01-06 17:16:50,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:16:50,795 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:50,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:51,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:51,009 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:51,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:51,011 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-01-06 17:16:51,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:51,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416449070] [2021-01-06 17:16:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:51,032 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:51,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158917053] [2021-01-06 17:16:51,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:51,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:16:51,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:51,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416449070] [2021-01-06 17:16:51,219 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:51,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158917053] [2021-01-06 17:16:51,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:16:51,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:16:51,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439229597] [2021-01-06 17:16:51,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:16:51,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:51,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:16:51,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:16:51,222 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2021-01-06 17:16:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:51,468 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-01-06 17:16:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:16:51,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 17:16:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:51,470 INFO L225 Difference]: With dead ends: 77 [2021-01-06 17:16:51,470 INFO L226 Difference]: Without dead ends: 59 [2021-01-06 17:16:51,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:16:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-01-06 17:16:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-01-06 17:16:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-01-06 17:16:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-01-06 17:16:51,481 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-01-06 17:16:51,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:51,481 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-01-06 17:16:51,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:16:51,482 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-01-06 17:16:51,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:16:51,483 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:51,483 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:51,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:51,697 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:51,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:51,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-01-06 17:16:51,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:51,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107554265] [2021-01-06 17:16:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:51,714 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:51,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475672085] [2021-01-06 17:16:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:51,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2021-01-06 17:16:51,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:51,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107554265] [2021-01-06 17:16:51,872 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:51,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475672085] [2021-01-06 17:16:51,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:51,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:16:51,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038989904] [2021-01-06 17:16:51,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:16:51,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:51,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:16:51,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:16:51,876 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 7 states. [2021-01-06 17:16:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:52,051 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2021-01-06 17:16:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:16:52,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-06 17:16:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:52,053 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:16:52,053 INFO L226 Difference]: Without dead ends: 95 [2021-01-06 17:16:52,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:16:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-01-06 17:16:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2021-01-06 17:16:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:16:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2021-01-06 17:16:52,066 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 20 [2021-01-06 17:16:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:52,066 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2021-01-06 17:16:52,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:16:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2021-01-06 17:16:52,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:16:52,067 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:52,067 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:52,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:52,282 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:52,284 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-01-06 17:16:52,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:52,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442100027] [2021-01-06 17:16:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:52,301 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:52,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74558677] [2021-01-06 17:16:52,302 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 [2021-01-06 17:16:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:52,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:16:52,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:52,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442100027] [2021-01-06 17:16:52,442 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:52,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74558677] [2021-01-06 17:16:52,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:52,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:16:52,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538946844] [2021-01-06 17:16:52,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:16:52,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:52,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:16:52,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:16:52,445 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 5 states. [2021-01-06 17:16:52,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:52,475 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2021-01-06 17:16:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:16:52,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-01-06 17:16:52,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:52,476 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:16:52,476 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 17:16:52,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:16:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 17:16:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-01-06 17:16:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:16:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-01-06 17:16:52,488 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 21 [2021-01-06 17:16:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:52,488 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-01-06 17:16:52,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:16:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-01-06 17:16:52,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 17:16:52,489 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:52,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:52,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:16:52,703 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:52,703 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-01-06 17:16:52,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:52,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718099068] [2021-01-06 17:16:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:52,731 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:52,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738909811] [2021-01-06 17:16:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:52,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 17:16:52,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:52,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718099068] [2021-01-06 17:16:52,938 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:52,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738909811] [2021-01-06 17:16:52,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:52,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:16:52,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054089340] [2021-01-06 17:16:52,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:16:52,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:52,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:16:52,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:16:52,941 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 7 states. [2021-01-06 17:16:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:53,179 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-01-06 17:16:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:16:53,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-01-06 17:16:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:53,187 INFO L225 Difference]: With dead ends: 92 [2021-01-06 17:16:53,187 INFO L226 Difference]: Without dead ends: 82 [2021-01-06 17:16:53,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:16:53,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-06 17:16:53,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2021-01-06 17:16:53,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:16:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-01-06 17:16:53,216 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 22 [2021-01-06 17:16:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:53,217 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-01-06 17:16:53,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:16:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-01-06 17:16:53,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:16:53,222 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:53,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:53,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:53,436 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:53,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:53,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-01-06 17:16:53,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:53,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777810403] [2021-01-06 17:16:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:53,462 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:53,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096300675] [2021-01-06 17:16:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:53,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:16:53,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:53,781 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:16:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:53,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777810403] [2021-01-06 17:16:53,810 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:53,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096300675] [2021-01-06 17:16:53,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:53,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:16:53,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741806454] [2021-01-06 17:16:53,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:16:53,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:53,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:16:53,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:16:53,813 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 8 states. [2021-01-06 17:16:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:58,200 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2021-01-06 17:16:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:16:58,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:16:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:58,201 INFO L225 Difference]: With dead ends: 82 [2021-01-06 17:16:58,201 INFO L226 Difference]: Without dead ends: 80 [2021-01-06 17:16:58,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:16:58,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-06 17:16:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-01-06 17:16:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:16:58,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-01-06 17:16:58,210 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 31 [2021-01-06 17:16:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:58,211 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-01-06 17:16:58,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:16:58,211 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-01-06 17:16:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:16:58,212 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:58,212 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:16:58,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:58,413 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:58,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2021-01-06 17:16:58,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:58,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597313850] [2021-01-06 17:16:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:58,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:58,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833028163] [2021-01-06 17:16:58,426 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:58,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:16:58,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:16:58,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:16:58,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:58,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597313850] [2021-01-06 17:16:58,689 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:58,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833028163] [2021-01-06 17:16:58,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:58,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:16:58,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882119543] [2021-01-06 17:16:58,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:16:58,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:58,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:16:58,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:16:58,692 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 7 states. [2021-01-06 17:16:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:58,911 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2021-01-06 17:16:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:16:58,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2021-01-06 17:16:58,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:58,915 INFO L225 Difference]: With dead ends: 123 [2021-01-06 17:16:58,915 INFO L226 Difference]: Without dead ends: 121 [2021-01-06 17:16:58,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:16:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-01-06 17:16:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 81. [2021-01-06 17:16:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:16:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2021-01-06 17:16:58,933 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 32 [2021-01-06 17:16:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:58,933 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2021-01-06 17:16:58,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:16:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2021-01-06 17:16:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:16:58,941 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:58,941 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:59,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:16:59,156 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:59,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-01-06 17:16:59,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:59,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638631554] [2021-01-06 17:16:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:59,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:59,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248764338] [2021-01-06 17:16:59,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:16:59,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:16:59,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:16:59,388 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:16:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:16:59,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638631554] [2021-01-06 17:16:59,410 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:16:59,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248764338] [2021-01-06 17:16:59,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:16:59,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:16:59,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046825485] [2021-01-06 17:16:59,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:16:59,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:16:59,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:16:59,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:16:59,416 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 8 states. [2021-01-06 17:16:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:16:59,674 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-01-06 17:16:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:16:59,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:16:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:16:59,675 INFO L225 Difference]: With dead ends: 86 [2021-01-06 17:16:59,675 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 17:16:59,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:16:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 17:16:59,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2021-01-06 17:16:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:16:59,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2021-01-06 17:16:59,687 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 33 [2021-01-06 17:16:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:16:59,689 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2021-01-06 17:16:59,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:16:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2021-01-06 17:16:59,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:16:59,690 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:16:59,691 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:16:59,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:16:59,906 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:16:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:16:59,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2021-01-06 17:16:59,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:16:59,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424367192] [2021-01-06 17:16:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:16:59,917 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:16:59,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122459509] [2021-01-06 17:16:59,918 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 [2021-01-06 17:16:59,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:16:59,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:16:59,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:16:59,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:00,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424367192] [2021-01-06 17:17:00,056 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:00,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122459509] [2021-01-06 17:17:00,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:00,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:17:00,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004720807] [2021-01-06 17:17:00,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:17:00,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:00,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:17:00,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:17:00,059 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 6 states. [2021-01-06 17:17:00,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:00,113 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2021-01-06 17:17:00,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:17:00,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-01-06 17:17:00,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:00,116 INFO L225 Difference]: With dead ends: 105 [2021-01-06 17:17:00,116 INFO L226 Difference]: Without dead ends: 83 [2021-01-06 17:17:00,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:17:00,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-01-06 17:17:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-01-06 17:17:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-01-06 17:17:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2021-01-06 17:17:00,125 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 33 [2021-01-06 17:17:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:00,125 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2021-01-06 17:17:00,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:17:00,125 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2021-01-06 17:17:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:17:00,126 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:00,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:17:00,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:00,340 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:00,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2021-01-06 17:17:00,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:00,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680293627] [2021-01-06 17:17:00,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:00,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:00,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369090282] [2021-01-06 17:17:00,365 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 [2021-01-06 17:17:00,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:00,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:00,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:17:00,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:00,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680293627] [2021-01-06 17:17:00,659 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:00,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369090282] [2021-01-06 17:17:00,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:00,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:17:00,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442831740] [2021-01-06 17:17:00,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:17:00,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:00,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:17:00,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:17:00,661 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 9 states. [2021-01-06 17:17:00,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:00,980 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2021-01-06 17:17:00,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:17:00,981 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2021-01-06 17:17:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:00,982 INFO L225 Difference]: With dead ends: 118 [2021-01-06 17:17:00,982 INFO L226 Difference]: Without dead ends: 106 [2021-01-06 17:17:00,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:17:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-01-06 17:17:00,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 75. [2021-01-06 17:17:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-01-06 17:17:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-01-06 17:17:00,990 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2021-01-06 17:17:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:00,991 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-01-06 17:17:00,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:17:00,991 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-01-06 17:17:00,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:17:00,992 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:00,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-01-06 17:17:01,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:17:01,206 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 1 times [2021-01-06 17:17:01,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:01,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712021815] [2021-01-06 17:17:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:01,217 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:01,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917010089] [2021-01-06 17:17:01,218 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 [2021-01-06 17:17:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:17:01,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:17:01,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:01,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712021815] [2021-01-06 17:17:01,424 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:01,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917010089] [2021-01-06 17:17:01,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:01,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:17:01,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429683510] [2021-01-06 17:17:01,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:17:01,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:01,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:17:01,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:17:01,426 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 7 states. [2021-01-06 17:17:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:01,652 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2021-01-06 17:17:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:17:01,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2021-01-06 17:17:01,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:01,653 INFO L225 Difference]: With dead ends: 109 [2021-01-06 17:17:01,654 INFO L226 Difference]: Without dead ends: 93 [2021-01-06 17:17:01,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:17:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-06 17:17:01,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2021-01-06 17:17:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 17:17:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2021-01-06 17:17:01,663 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 36 [2021-01-06 17:17:01,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:01,663 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2021-01-06 17:17:01,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:17:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2021-01-06 17:17:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-06 17:17:01,664 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:01,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:17:01,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:17:01,878 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:01,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:01,879 INFO L82 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2021-01-06 17:17:01,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:01,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244661705] [2021-01-06 17:17:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:01,891 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:01,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020534598] [2021-01-06 17:17:01,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:01,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:17:01,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:01,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 39 conjunts are in the unsatisfiable core [2021-01-06 17:17:01,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:02,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:02,262 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:02,265 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:17:02,267 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:17:02,270 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:17:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:17:02,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244661705] [2021-01-06 17:17:02,296 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:02,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020534598] [2021-01-06 17:17:02,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:02,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:17:02,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377324643] [2021-01-06 17:17:02,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:17:02,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:02,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:17:02,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:17:02,299 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 11 states. [2021-01-06 17:17:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:17:02,903 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2021-01-06 17:17:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:17:02,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2021-01-06 17:17:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:17:02,904 INFO L225 Difference]: With dead ends: 90 [2021-01-06 17:17:02,904 INFO L226 Difference]: Without dead ends: 88 [2021-01-06 17:17:02,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-01-06 17:17:02,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-06 17:17:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2021-01-06 17:17:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-01-06 17:17:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2021-01-06 17:17:02,913 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 43 [2021-01-06 17:17:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:17:02,914 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2021-01-06 17:17:02,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:17:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2021-01-06 17:17:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-01-06 17:17:02,914 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:17:02,914 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-01-06 17:17:03,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:17:03,129 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:17:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:17:03,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1212527061, now seen corresponding path program 3 times [2021-01-06 17:17:03,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:17:03,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855311957] [2021-01-06 17:17:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:17:03,140 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:17:03,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354043615] [2021-01-06 17:17:03,141 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:17:03,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:17:03,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:17:03,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:17:03,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:17:19,072 WARN L197 SmtUtils]: Spent 4.46 s on a formula simplification that was a NOOP. DAG size: 38 [2021-01-06 17:17:30,708 WARN L197 SmtUtils]: Spent 5.29 s on a formula simplification that was a NOOP. DAG size: 30 [2021-01-06 17:17:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-01-06 17:17:36,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855311957] [2021-01-06 17:17:36,613 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:17:36,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354043615] [2021-01-06 17:17:36,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:17:36,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:17:36,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638106912] [2021-01-06 17:17:36,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:17:36,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:17:36,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:17:36,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=60, Unknown=9, NotChecked=0, Total=90 [2021-01-06 17:17:36,615 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 10 states. [2021-01-06 17:17:43,792 WARN L197 SmtUtils]: Spent 7.13 s on a formula simplification that was a NOOP. DAG size: 41 [2021-01-06 17:17:54,170 WARN L197 SmtUtils]: Spent 10.33 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-01-06 17:18:24,001 WARN L197 SmtUtils]: Spent 20.99 s on a formula simplification that was a NOOP. DAG size: 49 [2021-01-06 17:18:41,486 WARN L197 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 31 [2021-01-06 17:19:02,255 WARN L197 SmtUtils]: Spent 6.46 s on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2021-01-06 17:19:10,992 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 23 [2021-01-06 17:19:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:19:57,299 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2021-01-06 17:19:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:19:57,300 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2021-01-06 17:19:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:19:57,301 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:19:57,301 INFO L226 Difference]: Without dead ends: 88 [2021-01-06 17:19:57,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 106.9s TimeCoverageRelationStatistics Valid=74, Invalid=179, Unknown=19, NotChecked=0, Total=272 [2021-01-06 17:19:57,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-06 17:19:57,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2021-01-06 17:19:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-06 17:19:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2021-01-06 17:19:57,318 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 44 [2021-01-06 17:19:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:19:57,318 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2021-01-06 17:19:57,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:19:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2021-01-06 17:19:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-06 17:19:57,319 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:19:57,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:19:57,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:19:57,522 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:19:57,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:19:57,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2021-01-06 17:19:57,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:19:57,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323857237] [2021-01-06 17:19:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:19:57,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:19:57,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436032123] [2021-01-06 17:19:57,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true