/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/dijkstra-u_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:28:59,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:28:59,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:28:59,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:28:59,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:28:59,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:28:59,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:28:59,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:28:59,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:28:59,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:28:59,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:28:59,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:28:59,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:28:59,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:28:59,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:28:59,771 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:28:59,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:28:59,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:28:59,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:28:59,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:28:59,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:28:59,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:28:59,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:28:59,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:28:59,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:28:59,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:28:59,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:28:59,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:28:59,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:28:59,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:28:59,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:28:59,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:28:59,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:28:59,890 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:28:59,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:28:59,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:28:59,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:28:59,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:28:59,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:28:59,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:28:59,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:28:59,893 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:28:59,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:28:59,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:28:59,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:28:59,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:28:59,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:28:59,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:28:59,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:28:59,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:28:59,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:28:59,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:28:59,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:28:59,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:28:59,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:29:00,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:29:00,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:29:00,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:29:00,421 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:29:00,422 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:29:00,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound20.c [2020-12-23 07:29:00,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c6ba4c3ab/02c602de48ab4e5fbd971ca918a392f5/FLAGb0c4a2ad7 [2020-12-23 07:29:01,166 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:29:01,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound20.c [2020-12-23 07:29:01,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c6ba4c3ab/02c602de48ab4e5fbd971ca918a392f5/FLAGb0c4a2ad7 [2020-12-23 07:29:01,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/c6ba4c3ab/02c602de48ab4e5fbd971ca918a392f5 [2020-12-23 07:29:01,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:29:01,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:29:01,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:29:01,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:29:01,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:29:01,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:01,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5318e7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01, skipping insertion in model container [2020-12-23 07:29:01,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:01,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:29:01,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:29:01,815 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/dijkstra-u_unwindbound20.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:29:01,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:29:01,865 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:29:01,880 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/dijkstra-u_unwindbound20.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 07:29:01,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:29:01,921 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:29:01,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01 WrapperNode [2020-12-23 07:29:01,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:29:01,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:29:01,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:29:01,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:29:01,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:01,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:01,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:29:01,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:29:01,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:29:01,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:29:01,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:01,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:01,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:01,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:02,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:02,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:02,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... [2020-12-23 07:29:02,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:29:02,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:29:02,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:29:02,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:29:02,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:29:02,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:29:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:29:02,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:29:02,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:29:04,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:29:04,789 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-23 07:29:04,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:04 BoogieIcfgContainer [2020-12-23 07:29:04,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:29:04,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:29:04,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:29:04,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:29:04,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:29:01" (1/3) ... [2020-12-23 07:29:04,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17da0dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:29:04, skipping insertion in model container [2020-12-23 07:29:04,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:29:01" (2/3) ... [2020-12-23 07:29:04,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17da0dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:29:04, skipping insertion in model container [2020-12-23 07:29:04,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:29:04" (3/3) ... [2020-12-23 07:29:04,801 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound20.c [2020-12-23 07:29:04,807 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:29:04,813 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-23 07:29:04,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-23 07:29:04,860 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:29:04,860 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:29:04,860 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:29:04,861 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:29:04,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:29:04,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:29:04,861 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:29:04,861 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:29:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-23 07:29:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 07:29:04,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:04,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:04,887 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:04,893 INFO L82 PathProgramCache]: Analyzing trace with hash -578123657, now seen corresponding path program 1 times [2020-12-23 07:29:04,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:04,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845135195] [2020-12-23 07:29:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:05,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845135195] [2020-12-23 07:29:05,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:05,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:29:05,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606328578] [2020-12-23 07:29:05,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:29:05,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:05,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:29:05,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:29:05,090 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-23 07:29:05,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:05,115 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2020-12-23 07:29:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:29:05,117 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-23 07:29:05,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:05,127 INFO L225 Difference]: With dead ends: 97 [2020-12-23 07:29:05,128 INFO L226 Difference]: Without dead ends: 46 [2020-12-23 07:29:05,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:29:05,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-23 07:29:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-23 07:29:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 07:29:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-12-23 07:29:05,173 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2020-12-23 07:29:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:05,173 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-12-23 07:29:05,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:29:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-12-23 07:29:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 07:29:05,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:05,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:05,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:29:05,175 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:05,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2020-12-23 07:29:05,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:05,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515978733] [2020-12-23 07:29:05,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:05,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515978733] [2020-12-23 07:29:05,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:05,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 07:29:05,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824555945] [2020-12-23 07:29:05,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 07:29:05,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:05,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 07:29:05,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 07:29:05,258 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2020-12-23 07:29:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:05,293 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-12-23 07:29:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 07:29:05,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 07:29:05,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:05,295 INFO L225 Difference]: With dead ends: 87 [2020-12-23 07:29:05,295 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 07:29:05,297 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 [2020-12-23 07:29:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 07:29:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-23 07:29:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-23 07:29:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-12-23 07:29:05,306 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2020-12-23 07:29:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:05,307 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-12-23 07:29:05,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 07:29:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-12-23 07:29:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 07:29:05,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:05,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:05,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 07:29:05,308 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:05,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:05,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2020-12-23 07:29:05,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:05,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394000035] [2020-12-23 07:29:05,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:05,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394000035] [2020-12-23 07:29:05,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:05,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:29:05,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229469266] [2020-12-23 07:29:05,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:29:05,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:05,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:29:05,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:29:05,618 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-12-23 07:29:21,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:21,057 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-12-23 07:29:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:29:21,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 07:29:21,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:21,062 INFO L225 Difference]: With dead ends: 116 [2020-12-23 07:29:21,062 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 07:29:21,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:29:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 07:29:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-12-23 07:29:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 07:29:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-12-23 07:29:21,092 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11 [2020-12-23 07:29:21,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:21,093 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-12-23 07:29:21,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:29:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-12-23 07:29:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 07:29:21,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:21,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:21,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 07:29:21,098 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1083313625, now seen corresponding path program 1 times [2020-12-23 07:29:21,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:21,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977390473] [2020-12-23 07:29:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:21,138 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:21,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14743532] [2020-12-23 07:29:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:21,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:29:21,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:21,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977390473] [2020-12-23 07:29:21,291 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:21,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14743532] [2020-12-23 07:29:21,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:21,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 07:29:21,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136409936] [2020-12-23 07:29:21,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:29:21,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:21,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:29:21,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:29:21,295 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 5 states. [2020-12-23 07:29:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:21,355 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2020-12-23 07:29:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:29:21,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 07:29:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:21,357 INFO L225 Difference]: With dead ends: 70 [2020-12-23 07:29:21,357 INFO L226 Difference]: Without dead ends: 66 [2020-12-23 07:29:21,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:29:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-23 07:29:21,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-12-23 07:29:21,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 07:29:21,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-12-23 07:29:21,370 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 12 [2020-12-23 07:29:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:21,370 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-12-23 07:29:21,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:29:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-12-23 07:29:21,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:29:21,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:21,371 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:21,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:21,587 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:21,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:21,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2047013432, now seen corresponding path program 1 times [2020-12-23 07:29:21,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:21,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119562062] [2020-12-23 07:29:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:21,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119562062] [2020-12-23 07:29:21,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648046178] [2020-12-23 07:29:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:21,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 07:29:21,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:21,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 07:29:21,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-23 07:29:21,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126895711] [2020-12-23 07:29:21,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:29:21,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:21,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:29:21,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:29:21,764 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2020-12-23 07:29:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:21,813 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-12-23 07:29:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:29:21,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 07:29:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:21,815 INFO L225 Difference]: With dead ends: 106 [2020-12-23 07:29:21,815 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 07:29:21,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:29:21,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 07:29:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-23 07:29:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 07:29:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-12-23 07:29:21,829 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 13 [2020-12-23 07:29:21,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:21,830 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-12-23 07:29:21,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:29:21,830 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-12-23 07:29:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 07:29:21,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:21,831 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:22,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:22,047 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:22,048 INFO L82 PathProgramCache]: Analyzing trace with hash -918298294, now seen corresponding path program 1 times [2020-12-23 07:29:22,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:22,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104275291] [2020-12-23 07:29:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 07:29:22,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104275291] [2020-12-23 07:29:22,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:22,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 07:29:22,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173410256] [2020-12-23 07:29:22,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:29:22,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:22,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:29:22,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 07:29:22,208 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 5 states. [2020-12-23 07:29:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:32,980 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-12-23 07:29:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:29:32,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 07:29:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:32,982 INFO L225 Difference]: With dead ends: 105 [2020-12-23 07:29:32,982 INFO L226 Difference]: Without dead ends: 89 [2020-12-23 07:29:32,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:29:32,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-23 07:29:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2020-12-23 07:29:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-23 07:29:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-12-23 07:29:32,995 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 14 [2020-12-23 07:29:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:32,995 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-12-23 07:29:32,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:29:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-12-23 07:29:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:29:32,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:32,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:32,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 07:29:32,997 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:32,998 INFO L82 PathProgramCache]: Analyzing trace with hash -966633767, now seen corresponding path program 1 times [2020-12-23 07:29:32,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:32,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504724249] [2020-12-23 07:29:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:33,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:33,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311369817] [2020-12-23 07:29:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:33,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-23 07:29:33,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:33,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504724249] [2020-12-23 07:29:33,208 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:33,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311369817] [2020-12-23 07:29:33,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:33,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:29:33,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308308400] [2020-12-23 07:29:33,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:29:33,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:33,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:29:33,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:29:33,211 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 6 states. [2020-12-23 07:29:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:41,465 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-12-23 07:29:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:29:41,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:29:41,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:41,466 INFO L225 Difference]: With dead ends: 81 [2020-12-23 07:29:41,467 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 07:29:41,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:29:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 07:29:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-23 07:29:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 07:29:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-12-23 07:29:41,475 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 15 [2020-12-23 07:29:41,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:41,475 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-12-23 07:29:41,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:29:41,476 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-12-23 07:29:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 07:29:41,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:41,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:41,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:41,686 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:41,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:41,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1597540912, now seen corresponding path program 1 times [2020-12-23 07:29:41,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:41,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759581305] [2020-12-23 07:29:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:41,715 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:41,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [807867295] [2020-12-23 07:29:41,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:41,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:29:41,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:41,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759581305] [2020-12-23 07:29:41,830 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:41,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807867295] [2020-12-23 07:29:41,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:41,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:29:41,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857348344] [2020-12-23 07:29:41,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:29:41,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:41,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:29:41,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:29:41,832 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 6 states. [2020-12-23 07:29:41,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:41,864 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-12-23 07:29:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:29:41,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 07:29:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:41,866 INFO L225 Difference]: With dead ends: 69 [2020-12-23 07:29:41,866 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 07:29:41,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:29:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 07:29:41,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-23 07:29:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-23 07:29:41,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-12-23 07:29:41,874 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 15 [2020-12-23 07:29:41,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:41,875 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-12-23 07:29:41,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:29:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-12-23 07:29:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:29:41,876 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:41,876 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:42,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:42,090 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:42,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash -745841841, now seen corresponding path program 2 times [2020-12-23 07:29:42,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:42,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263941637] [2020-12-23 07:29:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:42,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263941637] [2020-12-23 07:29:42,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226615511] [2020-12-23 07:29:42,163 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:42,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-23 07:29:42,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:29:42,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-23 07:29:42,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-23 07:29:42,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:42,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2020-12-23 07:29:42,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184645273] [2020-12-23 07:29:42,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 07:29:42,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:42,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 07:29:42,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:29:42,273 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 5 states. [2020-12-23 07:29:42,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:42,343 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-12-23 07:29:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 07:29:42,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-23 07:29:42,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:42,347 INFO L225 Difference]: With dead ends: 109 [2020-12-23 07:29:42,347 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 07:29:42,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:29:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 07:29:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-12-23 07:29:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:29:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-12-23 07:29:42,363 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 16 [2020-12-23 07:29:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:42,364 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-12-23 07:29:42,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 07:29:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-12-23 07:29:42,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 07:29:42,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:42,367 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:42,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:42,583 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:42,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1646243637, now seen corresponding path program 1 times [2020-12-23 07:29:42,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:42,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169928811] [2020-12-23 07:29:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:42,599 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:42,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1908858287] [2020-12-23 07:29:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:42,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 07:29:42,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:42,706 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:42,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169928811] [2020-12-23 07:29:42,706 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:42,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908858287] [2020-12-23 07:29:42,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:42,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 07:29:42,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592291344] [2020-12-23 07:29:42,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:29:42,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:42,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:29:42,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:29:42,709 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 6 states. [2020-12-23 07:29:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:42,767 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-12-23 07:29:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:29:42,767 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-23 07:29:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:42,768 INFO L225 Difference]: With dead ends: 71 [2020-12-23 07:29:42,768 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 07:29:42,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:29:42,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 07:29:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-12-23 07:29:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-23 07:29:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-12-23 07:29:42,775 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 17 [2020-12-23 07:29:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:42,776 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-12-23 07:29:42,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:29:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-12-23 07:29:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 07:29:42,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:42,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:42,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:42,992 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:42,993 INFO L82 PathProgramCache]: Analyzing trace with hash -545991120, now seen corresponding path program 1 times [2020-12-23 07:29:42,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:42,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553094923] [2020-12-23 07:29:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:43,015 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:43,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416877989] [2020-12-23 07:29:43,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:43,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 07:29:43,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 07:29:43,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553094923] [2020-12-23 07:29:43,213 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:43,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416877989] [2020-12-23 07:29:43,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:43,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:29:43,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363693727] [2020-12-23 07:29:43,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:29:43,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:43,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:29:43,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:29:43,215 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 6 states. [2020-12-23 07:29:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:47,894 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-23 07:29:47,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 07:29:47,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-23 07:29:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:47,896 INFO L225 Difference]: With dead ends: 94 [2020-12-23 07:29:47,896 INFO L226 Difference]: Without dead ends: 80 [2020-12-23 07:29:47,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:29:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-23 07:29:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2020-12-23 07:29:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-23 07:29:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-12-23 07:29:47,904 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 18 [2020-12-23 07:29:47,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:47,904 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-12-23 07:29:47,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:29:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-12-23 07:29:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 07:29:47,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:47,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:48,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:48,119 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:48,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:48,120 INFO L82 PathProgramCache]: Analyzing trace with hash -711299181, now seen corresponding path program 1 times [2020-12-23 07:29:48,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:48,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436169611] [2020-12-23 07:29:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:48,143 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:48,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588096361] [2020-12-23 07:29:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:48,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 07:29:48,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:48,360 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 07:29:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 07:29:48,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436169611] [2020-12-23 07:29:48,388 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:48,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588096361] [2020-12-23 07:29:48,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:29:48,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:29:48,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691475322] [2020-12-23 07:29:48,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:29:48,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:48,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:29:48,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:29:48,390 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 6 states. [2020-12-23 07:29:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:29:55,227 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-23 07:29:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 07:29:55,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-23 07:29:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:29:55,228 INFO L225 Difference]: With dead ends: 77 [2020-12-23 07:29:55,229 INFO L226 Difference]: Without dead ends: 67 [2020-12-23 07:29:55,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:29:55,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-23 07:29:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-12-23 07:29:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-23 07:29:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-12-23 07:29:55,236 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 20 [2020-12-23 07:29:55,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:29:55,236 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-12-23 07:29:55,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:29:55,236 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-12-23 07:29:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-23 07:29:55,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:29:55,237 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:29:55,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-23 07:29:55,442 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:29:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:29:55,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1399265450, now seen corresponding path program 1 times [2020-12-23 07:29:55,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:29:55,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273379155] [2020-12-23 07:29:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:29:55,455 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:29:55,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420353441] [2020-12-23 07:29:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:29:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:29:55,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-23 07:29:55,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:29:55,845 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-23 07:29:55,853 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:29:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:29:55,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273379155] [2020-12-23 07:29:55,890 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:29:55,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420353441] [2020-12-23 07:29:55,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:29:55,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:29:55,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398140123] [2020-12-23 07:29:55,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:29:55,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:29:55,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:29:55,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:29:55,893 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 10 states. [2020-12-23 07:30:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:11,646 INFO L93 Difference]: Finished difference Result 157 states and 166 transitions. [2020-12-23 07:30:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:30:11,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-23 07:30:11,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:11,648 INFO L225 Difference]: With dead ends: 157 [2020-12-23 07:30:11,648 INFO L226 Difference]: Without dead ends: 118 [2020-12-23 07:30:11,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:30:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-23 07:30:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 95. [2020-12-23 07:30:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 07:30:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-12-23 07:30:11,659 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 29 [2020-12-23 07:30:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:11,659 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-12-23 07:30:11,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:30:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-12-23 07:30:11,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-23 07:30:11,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:11,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:11,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:30:11,872 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:30:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash -427539036, now seen corresponding path program 1 times [2020-12-23 07:30:11,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:11,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547481119] [2020-12-23 07:30:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:11,890 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:30:11,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534252163] [2020-12-23 07:30:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:30:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:11,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-23 07:30:11,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:12,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:30:12,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547481119] [2020-12-23 07:30:12,020 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:30:12,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534252163] [2020-12-23 07:30:12,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:30:12,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 07:30:12,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669914391] [2020-12-23 07:30:12,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 07:30:12,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:12,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 07:30:12,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 07:30:12,023 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 7 states. [2020-12-23 07:30:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:30:12,069 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-12-23 07:30:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:30:12,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-23 07:30:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:30:12,071 INFO L225 Difference]: With dead ends: 113 [2020-12-23 07:30:12,071 INFO L226 Difference]: Without dead ends: 101 [2020-12-23 07:30:12,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:30:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-23 07:30:12,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2020-12-23 07:30:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 07:30:12,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2020-12-23 07:30:12,079 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 30 [2020-12-23 07:30:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:30:12,079 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2020-12-23 07:30:12,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 07:30:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2020-12-23 07:30:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 07:30:12,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:30:12,081 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:30:12,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:30:12,290 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:30:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:30:12,291 INFO L82 PathProgramCache]: Analyzing trace with hash -369177479, now seen corresponding path program 1 times [2020-12-23 07:30:12,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:30:12,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503030529] [2020-12-23 07:30:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:30:12,302 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:30:12,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719051281] [2020-12-23 07:30:12,302 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:30:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:30:12,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-23 07:30:12,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:30:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:30:12,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503030529] [2020-12-23 07:30:12,829 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:30:12,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719051281] [2020-12-23 07:30:12,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:30:12,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-23 07:30:12,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983093579] [2020-12-23 07:30:12,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 07:30:12,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:30:12,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 07:30:12,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:30:12,831 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 10 states. [2020-12-23 07:31:06,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:06,537 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2020-12-23 07:31:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:31:06,538 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-23 07:31:06,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:06,539 INFO L225 Difference]: With dead ends: 117 [2020-12-23 07:31:06,539 INFO L226 Difference]: Without dead ends: 111 [2020-12-23 07:31:06,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-23 07:31:06,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-23 07:31:06,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-12-23 07:31:06,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-23 07:31:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-12-23 07:31:06,547 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 31 [2020-12-23 07:31:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:06,548 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-12-23 07:31:06,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 07:31:06,548 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-12-23 07:31:06,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 07:31:06,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:06,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:06,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-23 07:31:06,764 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:06,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:06,765 INFO L82 PathProgramCache]: Analyzing trace with hash -512605587, now seen corresponding path program 2 times [2020-12-23 07:31:06,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:06,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112776413] [2020-12-23 07:31:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:06,775 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:06,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943141756] [2020-12-23 07:31:06,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:06,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:31:06,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:31:06,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 07:31:06,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:07,286 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-23 07:31:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:07,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112776413] [2020-12-23 07:31:07,328 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:07,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943141756] [2020-12-23 07:31:07,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:07,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:31:07,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919474863] [2020-12-23 07:31:07,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:31:07,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:07,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:31:07,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:31:07,341 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 12 states. [2020-12-23 07:31:16,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:16,235 INFO L93 Difference]: Finished difference Result 189 states and 204 transitions. [2020-12-23 07:31:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:31:16,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-12-23 07:31:16,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:16,238 INFO L225 Difference]: With dead ends: 189 [2020-12-23 07:31:16,238 INFO L226 Difference]: Without dead ends: 150 [2020-12-23 07:31:16,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:31:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-23 07:31:16,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 130. [2020-12-23 07:31:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:31:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2020-12-23 07:31:16,256 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 32 [2020-12-23 07:31:16,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:16,259 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2020-12-23 07:31:16,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:31:16,259 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2020-12-23 07:31:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:31:16,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:16,263 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:16,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-23 07:31:16,469 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:16,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:16,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1702884924, now seen corresponding path program 1 times [2020-12-23 07:31:16,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:16,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693739994] [2020-12-23 07:31:16,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:16,480 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:16,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649419547] [2020-12-23 07:31:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:31:17,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-23 07:31:17,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:19,981 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2020-12-23 07:31:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:20,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693739994] [2020-12-23 07:31:20,028 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:20,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649419547] [2020-12-23 07:31:20,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:20,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-23 07:31:20,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658362984] [2020-12-23 07:31:20,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-23 07:31:20,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:20,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-23 07:31:20,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-23 07:31:20,031 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand 11 states. [2020-12-23 07:31:34,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:34,308 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2020-12-23 07:31:34,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 07:31:34,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-12-23 07:31:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:34,309 INFO L225 Difference]: With dead ends: 136 [2020-12-23 07:31:34,309 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 07:31:34,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-12-23 07:31:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 07:31:34,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-12-23 07:31:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:31:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-12-23 07:31:34,318 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 33 [2020-12-23 07:31:34,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:34,318 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-12-23 07:31:34,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-23 07:31:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-12-23 07:31:34,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-23 07:31:34,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:34,319 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:34,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-23 07:31:34,521 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:34,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:34,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1289112941, now seen corresponding path program 2 times [2020-12-23 07:31:34,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:34,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713777294] [2020-12-23 07:31:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:34,542 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:34,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088805010] [2020-12-23 07:31:34,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:34,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:31:34,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:31:34,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 07:31:34,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:34,702 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:34,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713777294] [2020-12-23 07:31:34,702 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:34,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088805010] [2020-12-23 07:31:34,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:34,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-23 07:31:34,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173595457] [2020-12-23 07:31:34,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 07:31:34,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:34,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 07:31:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-23 07:31:34,704 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 8 states. [2020-12-23 07:31:34,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:34,772 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-12-23 07:31:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 07:31:34,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-23 07:31:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:34,774 INFO L225 Difference]: With dead ends: 156 [2020-12-23 07:31:34,774 INFO L226 Difference]: Without dead ends: 144 [2020-12-23 07:31:34,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 07:31:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-23 07:31:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2020-12-23 07:31:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:31:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2020-12-23 07:31:34,783 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 33 [2020-12-23 07:31:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:34,784 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2020-12-23 07:31:34,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 07:31:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2020-12-23 07:31:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-23 07:31:34,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:34,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:34,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:34,986 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:34,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1307426256, now seen corresponding path program 2 times [2020-12-23 07:31:34,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:34,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567920060] [2020-12-23 07:31:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:34,997 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:34,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83976898] [2020-12-23 07:31:34,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:38,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 07:31:38,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 07:31:38,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-23 07:31:38,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:31:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:31:38,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567920060] [2020-12-23 07:31:38,562 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:31:38,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83976898] [2020-12-23 07:31:38,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 07:31:38,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-23 07:31:38,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705527486] [2020-12-23 07:31:38,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-23 07:31:38,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:31:38,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-23 07:31:38,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-23 07:31:38,565 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand 12 states. [2020-12-23 07:31:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:31:55,199 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2020-12-23 07:31:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 07:31:55,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-12-23 07:31:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:31:55,201 INFO L225 Difference]: With dead ends: 134 [2020-12-23 07:31:55,201 INFO L226 Difference]: Without dead ends: 132 [2020-12-23 07:31:55,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2020-12-23 07:31:55,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-23 07:31:55,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-12-23 07:31:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-23 07:31:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2020-12-23 07:31:55,211 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 34 [2020-12-23 07:31:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:31:55,211 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2020-12-23 07:31:55,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-23 07:31:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2020-12-23 07:31:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-23 07:31:55,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:31:55,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:31:55,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 07:31:55,413 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:31:55,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:31:55,414 INFO L82 PathProgramCache]: Analyzing trace with hash 90029215, now seen corresponding path program 1 times [2020-12-23 07:31:55,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:31:55,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580229059] [2020-12-23 07:31:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:31:55,423 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:31:55,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918412658] [2020-12-23 07:31:55,424 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true