/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/hard2_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:50:05,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:50:05,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:50:06,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:50:06,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:50:06,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:50:06,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:50:06,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:50:06,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:50:06,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:50:06,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:50:06,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:50:06,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:50:06,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:50:06,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:50:06,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:50:06,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:50:06,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:50:06,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:50:06,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:50:06,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:50:06,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:50:06,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:50:06,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:50:06,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:50:06,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:50:06,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:50:06,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:50:06,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:50:06,143 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:50:06,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:50:06,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:50:06,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:50:06,146 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:50:06,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:50:06,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:50:06,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:50:06,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:50:06,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:50:06,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:50:06,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:50:06,147 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:50:06,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:50:06,148 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:50:06,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:50:06,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:50:06,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:50:06,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:50:06,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:50:06,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:50:06,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:50:06,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:50:06,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:50:06,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:50:06,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:50:06,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:50:06,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:50:06,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:50:06,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:50:06,615 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:50:06,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2021-01-06 17:50:06,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6fb67a804/1193954075384e9493a2008f8985d80c/FLAG78440d88b [2021-01-06 17:50:07,315 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:50:07,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2021-01-06 17:50:07,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6fb67a804/1193954075384e9493a2008f8985d80c/FLAG78440d88b [2021-01-06 17:50:07,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/6fb67a804/1193954075384e9493a2008f8985d80c [2021-01-06 17:50:07,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:50:07,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:50:07,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:07,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:50:07,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:50:07,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:07" (1/1) ... [2021-01-06 17:50:07,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcb556e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:07, skipping insertion in model container [2021-01-06 17:50:07,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:07" (1/1) ... [2021-01-06 17:50:07,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:50:07,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:50:07,902 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/hard2_valuebound2.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:50:07,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:07,941 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:50:07,961 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/hard2_valuebound2.c[526,539] left hand side expression in assignment: lhs: VariableLHS[~A~0,] left hand side expression in assignment: lhs: VariableLHS[~B~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~d~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[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] [2021-01-06 17:50:07,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:08,009 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:50:08,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08 WrapperNode [2021-01-06 17:50:08,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:08,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:08,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:50:08,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:50:08,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:08,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:50:08,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:50:08,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:50:08,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... [2021-01-06 17:50:08,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:50:08,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:50:08,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:50:08,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:50:08,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:50:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:50:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:50:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:50:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:50:08,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:50:08,679 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-01-06 17:50:08,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:08 BoogieIcfgContainer [2021-01-06 17:50:08,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:50:08,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:50:08,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:50:08,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:50:08,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:50:07" (1/3) ... [2021-01-06 17:50:08,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3bfc6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:08, skipping insertion in model container [2021-01-06 17:50:08,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:08" (2/3) ... [2021-01-06 17:50:08,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3bfc6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:08, skipping insertion in model container [2021-01-06 17:50:08,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:08" (3/3) ... [2021-01-06 17:50:08,696 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2021-01-06 17:50:08,706 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:50:08,712 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-06 17:50:08,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-06 17:50:08,782 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:50:08,782 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:50:08,782 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:50:08,782 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:50:08,783 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:50:08,783 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:50:08,783 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:50:08,783 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:50:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-01-06 17:50:08,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:50:08,814 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:08,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:08,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:08,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-01-06 17:50:08,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:08,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322922247] [2021-01-06 17:50:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:09,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322922247] [2021-01-06 17:50:09,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:09,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:50:09,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526565204] [2021-01-06 17:50:09,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:50:09,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:50:09,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:50:09,090 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2021-01-06 17:50:09,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:09,113 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-01-06 17:50:09,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:50:09,115 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-06 17:50:09,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:09,125 INFO L225 Difference]: With dead ends: 75 [2021-01-06 17:50:09,125 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 17:50:09,128 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 [2021-01-06 17:50:09,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 17:50:09,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-01-06 17:50:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 17:50:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-01-06 17:50:09,163 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-01-06 17:50:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:09,164 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-01-06 17:50:09,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:50:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-01-06 17:50:09,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-06 17:50:09,165 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:09,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:50:09,166 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:09,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-01-06 17:50:09,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126138529] [2021-01-06 17:50:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:09,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126138529] [2021-01-06 17:50:09,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:09,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:50:09,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057457125] [2021-01-06 17:50:09,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:50:09,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:50:09,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:50:09,252 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2021-01-06 17:50:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:09,347 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-01-06 17:50:09,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:50:09,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-06 17:50:09,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:09,349 INFO L225 Difference]: With dead ends: 54 [2021-01-06 17:50:09,350 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:50:09,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:09,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:50:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-01-06 17:50:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-01-06 17:50:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-01-06 17:50:09,368 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2021-01-06 17:50:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:09,368 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-01-06 17:50:09,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:50:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-01-06 17:50:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:50:09,369 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:09,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:50:09,370 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:09,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-01-06 17:50:09,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019280138] [2021-01-06 17:50:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:09,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019280138] [2021-01-06 17:50:09,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:09,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:50:09,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449998700] [2021-01-06 17:50:09,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:50:09,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:50:09,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:50:09,456 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2021-01-06 17:50:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:09,523 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-01-06 17:50:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:50:09,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-01-06 17:50:09,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:09,525 INFO L225 Difference]: With dead ends: 52 [2021-01-06 17:50:09,525 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:50:09,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:09,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:50:09,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2021-01-06 17:50:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-01-06 17:50:09,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-01-06 17:50:09,534 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-01-06 17:50:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:09,535 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-01-06 17:50:09,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:50:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-01-06 17:50:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:50:09,535 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:09,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:50:09,536 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:09,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-01-06 17:50:09,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:09,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46082500] [2021-01-06 17:50:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:09,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:09,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904601838] [2021-01-06 17:50:09,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:09,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:50:09,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:09,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46082500] [2021-01-06 17:50:09,723 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:09,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904601838] [2021-01-06 17:50:09,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:09,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:50:09,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731133920] [2021-01-06 17:50:09,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:50:09,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:09,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:50:09,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:50:09,729 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2021-01-06 17:50:09,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:09,877 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-01-06 17:50:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:50:09,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 17:50:09,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:09,879 INFO L225 Difference]: With dead ends: 72 [2021-01-06 17:50:09,879 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:50:09,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:50:09,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-01-06 17:50:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 17:50:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-01-06 17:50:09,893 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-01-06 17:50:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:09,893 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-01-06 17:50:09,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:50:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-01-06 17:50:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:50:09,894 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:09,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:10,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:10,110 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:10,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:10,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2021-01-06 17:50:10,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:10,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740118942] [2021-01-06 17:50:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:10,148 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:10,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266670716] [2021-01-06 17:50:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:10,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:50:10,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:10,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740118942] [2021-01-06 17:50:10,286 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:10,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266670716] [2021-01-06 17:50:10,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:10,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:50:10,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804058282] [2021-01-06 17:50:10,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:50:10,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:10,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:50:10,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:10,290 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2021-01-06 17:50:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:10,407 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-01-06 17:50:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:50:10,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:50:10,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:10,411 INFO L225 Difference]: With dead ends: 63 [2021-01-06 17:50:10,411 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:50:10,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:50:10,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:50:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-01-06 17:50:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:50:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-01-06 17:50:10,431 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-01-06 17:50:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:10,431 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-01-06 17:50:10,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:50:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-01-06 17:50:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:50:10,432 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:10,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:10,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:10,648 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:10,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:10,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-01-06 17:50:10,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:10,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596806225] [2021-01-06 17:50:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:10,666 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:10,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758422997] [2021-01-06 17:50:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:10,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjunts are in the unsatisfiable core [2021-01-06 17:50:10,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:10,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596806225] [2021-01-06 17:50:10,824 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:10,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758422997] [2021-01-06 17:50:10,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:10,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:10,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293944858] [2021-01-06 17:50:10,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:50:10,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:10,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:50:10,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:10,828 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 7 states. [2021-01-06 17:50:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:10,972 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-01-06 17:50:10,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:10,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2021-01-06 17:50:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:10,974 INFO L225 Difference]: With dead ends: 98 [2021-01-06 17:50:10,974 INFO L226 Difference]: Without dead ends: 61 [2021-01-06 17:50:10,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-01-06 17:50:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2021-01-06 17:50:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-01-06 17:50:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2021-01-06 17:50:10,983 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 18 [2021-01-06 17:50:10,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:10,984 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2021-01-06 17:50:10,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:50:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2021-01-06 17:50:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-06 17:50:10,985 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:10,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:11,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:11,200 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:11,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-01-06 17:50:11,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:11,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16374198] [2021-01-06 17:50:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:11,215 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:11,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456938746] [2021-01-06 17:50:11,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:11,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:11,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:11,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2021-01-06 17:50:11,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:11,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16374198] [2021-01-06 17:50:11,430 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:11,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456938746] [2021-01-06 17:50:11,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:11,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:11,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535258507] [2021-01-06 17:50:11,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:11,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:11,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:11,433 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 8 states. [2021-01-06 17:50:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:11,641 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2021-01-06 17:50:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:50:11,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-01-06 17:50:11,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:11,644 INFO L225 Difference]: With dead ends: 103 [2021-01-06 17:50:11,645 INFO L226 Difference]: Without dead ends: 89 [2021-01-06 17:50:11,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:11,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-01-06 17:50:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2021-01-06 17:50:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-01-06 17:50:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2021-01-06 17:50:11,658 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2021-01-06 17:50:11,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:11,658 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2021-01-06 17:50:11,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2021-01-06 17:50:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:50:11,659 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:11,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:11,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:11,873 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:11,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2021-01-06 17:50:11,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:11,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641683026] [2021-01-06 17:50:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:11,888 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:11,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189438617] [2021-01-06 17:50:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:11,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2021-01-06 17:50:11,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:12,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641683026] [2021-01-06 17:50:12,109 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:12,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189438617] [2021-01-06 17:50:12,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:12,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:50:12,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402871712] [2021-01-06 17:50:12,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:50:12,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:12,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:50:12,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:50:12,111 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2021-01-06 17:50:12,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:12,293 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-01-06 17:50:12,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:12,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2021-01-06 17:50:12,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:12,295 INFO L225 Difference]: With dead ends: 101 [2021-01-06 17:50:12,295 INFO L226 Difference]: Without dead ends: 99 [2021-01-06 17:50:12,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-01-06 17:50:12,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2021-01-06 17:50:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2021-01-06 17:50:12,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-01-06 17:50:12,320 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 27 [2021-01-06 17:50:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:12,320 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-01-06 17:50:12,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:50:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-01-06 17:50:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:50:12,321 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:12,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:12,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:12,523 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:12,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1100255215, now seen corresponding path program 1 times [2021-01-06 17:50:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:12,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971486431] [2021-01-06 17:50:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:12,537 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:12,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592912438] [2021-01-06 17:50:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:12,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:50:12,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:12,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971486431] [2021-01-06 17:50:12,756 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:12,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592912438] [2021-01-06 17:50:12,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:12,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:12,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755969578] [2021-01-06 17:50:12,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:12,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:12,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:12,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:12,762 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2021-01-06 17:50:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:12,919 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2021-01-06 17:50:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:12,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-01-06 17:50:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:12,920 INFO L225 Difference]: With dead ends: 117 [2021-01-06 17:50:12,920 INFO L226 Difference]: Without dead ends: 91 [2021-01-06 17:50:12,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:12,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-01-06 17:50:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2021-01-06 17:50:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2021-01-06 17:50:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2021-01-06 17:50:12,931 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 29 [2021-01-06 17:50:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:12,931 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2021-01-06 17:50:12,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:12,932 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2021-01-06 17:50:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:50:12,933 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:12,933 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] [2021-01-06 17:50:13,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:13,148 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:13,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:13,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2021-01-06 17:50:13,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:13,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267304750] [2021-01-06 17:50:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:13,161 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:13,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697858595] [2021-01-06 17:50:13,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:13,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 37 conjunts are in the unsatisfiable core [2021-01-06 17:50:13,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:13,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267304750] [2021-01-06 17:50:13,357 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:13,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697858595] [2021-01-06 17:50:13,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:13,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:50:13,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073529843] [2021-01-06 17:50:13,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:50:13,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:13,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:50:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:50:13,360 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 8 states. [2021-01-06 17:50:13,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:13,528 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2021-01-06 17:50:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:13,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2021-01-06 17:50:13,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:13,529 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:50:13,529 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 17:50:13,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:50:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 17:50:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-01-06 17:50:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:50:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2021-01-06 17:50:13,542 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 32 [2021-01-06 17:50:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:13,542 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2021-01-06 17:50:13,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:50:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2021-01-06 17:50:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:50:13,543 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:13,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:13,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:50:13,760 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:13,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:13,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1670816768, now seen corresponding path program 3 times [2021-01-06 17:50:13,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:13,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767148001] [2021-01-06 17:50:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:13,773 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:13,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1240220117] [2021-01-06 17:50:13,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:13,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:50:13,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:13,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:50:13,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-01-06 17:50:14,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767148001] [2021-01-06 17:50:14,027 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:14,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240220117] [2021-01-06 17:50:14,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:14,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:14,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50236201] [2021-01-06 17:50:14,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:14,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:14,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:14,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:14,029 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 9 states. [2021-01-06 17:50:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:14,246 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2021-01-06 17:50:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:50:14,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-01-06 17:50:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:14,247 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:50:14,247 INFO L226 Difference]: Without dead ends: 84 [2021-01-06 17:50:14,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-01-06 17:50:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2021-01-06 17:50:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:50:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-01-06 17:50:14,259 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2021-01-06 17:50:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:14,259 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-01-06 17:50:14,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-01-06 17:50:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:50:14,261 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:14,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:14,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-01-06 17:50:14,476 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1996519097, now seen corresponding path program 2 times [2021-01-06 17:50:14,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:14,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457676765] [2021-01-06 17:50:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:14,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:14,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208801536] [2021-01-06 17:50:14,489 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:14,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:50:14,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:14,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 43 conjunts are in the unsatisfiable core [2021-01-06 17:50:14,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:15,011 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:50:15,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2021-01-06 17:50:15,028 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:50:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:15,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457676765] [2021-01-06 17:50:15,054 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:15,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208801536] [2021-01-06 17:50:15,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:15,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:50:15,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980745372] [2021-01-06 17:50:15,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:50:15,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:15,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:50:15,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:50:15,056 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 11 states. [2021-01-06 17:50:15,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:15,850 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2021-01-06 17:50:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:50:15,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2021-01-06 17:50:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:15,853 INFO L225 Difference]: With dead ends: 108 [2021-01-06 17:50:15,853 INFO L226 Difference]: Without dead ends: 70 [2021-01-06 17:50:15,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-01-06 17:50:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-01-06 17:50:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2021-01-06 17:50:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-01-06 17:50:15,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-01-06 17:50:15,875 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 34 [2021-01-06 17:50:15,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:15,875 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-01-06 17:50:15,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:50:15,875 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-01-06 17:50:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-01-06 17:50:15,876 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:15,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:16,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:16,092 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:16,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:16,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1808046758, now seen corresponding path program 3 times [2021-01-06 17:50:16,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:16,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871645946] [2021-01-06 17:50:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:16,104 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:16,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507740900] [2021-01-06 17:50:16,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:16,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-01-06 17:50:16,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:50:16,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 24 conjunts are in the unsatisfiable core [2021-01-06 17:50:16,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:16,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871645946] [2021-01-06 17:50:16,383 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:16,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507740900] [2021-01-06 17:50:16,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:16,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:50:16,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327295369] [2021-01-06 17:50:16,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:50:16,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:16,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:50:16,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:16,385 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 9 states. [2021-01-06 17:50:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:16,719 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2021-01-06 17:50:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:50:16,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2021-01-06 17:50:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:16,720 INFO L225 Difference]: With dead ends: 94 [2021-01-06 17:50:16,720 INFO L226 Difference]: Without dead ends: 76 [2021-01-06 17:50:16,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:50:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-01-06 17:50:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2021-01-06 17:50:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-01-06 17:50:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2021-01-06 17:50:16,731 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 40 [2021-01-06 17:50:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:16,731 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2021-01-06 17:50:16,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:50:16,731 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2021-01-06 17:50:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-01-06 17:50:16,732 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:16,732 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:16,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:16,946 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:50:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:16,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1871404857, now seen corresponding path program 1 times [2021-01-06 17:50:16,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:16,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316542606] [2021-01-06 17:50:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:16,974 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:16,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611046740] [2021-01-06 17:50:16,975 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 [2021-01-06 17:50:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:17,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 59 conjunts are in the unsatisfiable core [2021-01-06 17:50:17,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:17,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316542606] [2021-01-06 17:50:17,472 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:17,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611046740] [2021-01-06 17:50:17,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:50:17,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:50:17,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556299220] [2021-01-06 17:50:17,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:50:17,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:17,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:50:17,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:50:17,474 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 14 states. [2021-01-06 17:50:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:17,906 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-01-06 17:50:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:50:17,906 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2021-01-06 17:50:17,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:17,907 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:50:17,907 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 17:50:17,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:50:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 17:50:17,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 17:50:17,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 17:50:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 17:50:17,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2021-01-06 17:50:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:17,910 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 17:50:17,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:50:17,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 17:50:17,911 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 17:50:18,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:50:18,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 17:50:18,518 WARN L197 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2021-01-06 17:50:18,736 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2021-01-06 17:50:19,120 WARN L197 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-01-06 17:50:19,373 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2021-01-06 17:50:19,624 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2021-01-06 17:50:20,092 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2021-01-06 17:50:20,095 INFO L192 CegarLoopUtils]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-01-06 17:50:20,095 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:20,095 INFO L189 CegarLoopUtils]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-01-06 17:50:20,095 INFO L189 CegarLoopUtils]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-01-06 17:50:20,095 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-01-06 17:50:20,095 INFO L189 CegarLoopUtils]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:20,096 INFO L185 CegarLoopUtils]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse6 (<= ULTIMATE.start_main_~A~0 2))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~d~0 1)) (and (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~B~0 4)) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse2 (= ULTIMATE.start_main_~p~0 2) .cse3 .cse4 .cse5 .cse6 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)))) [2021-01-06 17:50:20,096 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:20,097 INFO L185 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse5 (<= ULTIMATE.start_main_~A~0 2))) (or (and .cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1)) (and (= ULTIMATE.start_main_~p~0 4) (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~B~0 4)) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse2 .cse3 .cse4 .cse5 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse3 .cse4 .cse5 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)))) [2021-01-06 17:50:20,097 INFO L189 CegarLoopUtils]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:20,097 INFO L185 CegarLoopUtils]: At program point L15-8(line 38) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse6 (<= ULTIMATE.start_main_~A~0 2))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~d~0 1)) (and (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~B~0 4)) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 (= ULTIMATE.start_main_~d~0 2) .cse2 (= ULTIMATE.start_main_~p~0 2) .cse3 .cse4 .cse5 .cse6 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)))) [2021-01-06 17:50:20,097 INFO L189 CegarLoopUtils]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:20,097 INFO L185 CegarLoopUtils]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~d~0 2)) (.cse2 (= ULTIMATE.start_main_~p~0 2)) (.cse5 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (.cse8 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~A~0 2)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse9 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse10 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (= ULTIMATE.start_main_~p~0 4) (= ULTIMATE.start_main_~d~0 (* (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0) 2)) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse3 .cse6 .cse4 .cse7 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and (<= (* 2 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~A~0) .cse0 .cse1 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) .cse8 .cse2 .cse6 .cse7 .cse5) (and .cse1 .cse9 .cse8 .cse10 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~r~0))) (and (< ULTIMATE.start_main_~B~0 (+ (div (+ ULTIMATE.start_main_~A~0 (* ULTIMATE.start_main_~r~0 (- 1))) 2) 1)) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~q~0 2) .cse1 .cse9 .cse10 (<= 0 ULTIMATE.start_main_~r~0) .cse6 .cse7) (and (= ULTIMATE.start_main_~B~0 1) .cse1 .cse9 .cse10 .cse3 .cse4))) [2021-01-06 17:50:20,097 INFO L189 CegarLoopUtils]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:20,097 INFO L185 CegarLoopUtils]: At program point L15-14(line 48) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~d~0 2)) (.cse2 (= ULTIMATE.start_main_~p~0 2)) (.cse5 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (.cse6 (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= ULTIMATE.start_main_~A~0 2)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse9 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)) (.cse10 (= ULTIMATE.start_main_~p~0 1)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and (<= (* 2 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~A~0) .cse0 .cse1 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~r~0)) .cse6 .cse2 .cse7 .cse8 .cse5) (and (= ULTIMATE.start_main_~p~0 4) (= ULTIMATE.start_main_~d~0 4) (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse1 .cse3 .cse7 .cse4 .cse8 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse1 .cse9 .cse6 .cse10 (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~r~0))) (and (< ULTIMATE.start_main_~B~0 (+ (div (+ ULTIMATE.start_main_~A~0 (* ULTIMATE.start_main_~r~0 (- 1))) 2) 1)) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~q~0 2) .cse1 .cse9 .cse10 (<= 0 ULTIMATE.start_main_~r~0) .cse7 .cse8) (and (= ULTIMATE.start_main_~B~0 1) .cse1 .cse9 .cse10 .cse3 .cse4))) [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 17:50:20,098 INFO L185 CegarLoopUtils]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1)) [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-01-06 17:50:20,098 INFO L192 CegarLoopUtils]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:20,098 INFO L189 CegarLoopUtils]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:20,099 INFO L189 CegarLoopUtils]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:20,099 INFO L189 CegarLoopUtils]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-01-06 17:50:20,099 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 17:50:20,099 INFO L185 CegarLoopUtils]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse6 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (<= ULTIMATE.start_main_~A~0 2))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~d~0 1)) (and (= ULTIMATE.start_main_~p~0 4) (= ULTIMATE.start_main_~d~0 4) .cse1 .cse6 .cse2 .cse3 .cse5 .cse4 (<= (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)) ULTIMATE.start_main_~r~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 2) .cse6 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse3 .cse5 .cse4))) [2021-01-06 17:50:20,099 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-01-06 17:50:20,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:50:20 BoogieIcfgContainer [2021-01-06 17:50:20,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:50:20,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:50:20,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:50:20,131 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:50:20,131 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:08" (3/4) ... [2021-01-06 17:50:20,135 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 17:50:20,147 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-01-06 17:50:20,148 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 17:50:20,148 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:50:20,148 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 17:50:20,207 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/hard2_valuebound2.c-witness.graphml [2021-01-06 17:50:20,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:50:20,208 INFO L168 Benchmark]: Toolchain (without parser) took 12508.76 ms. Allocated memory was 158.3 MB in the beginning and 230.7 MB in the end (delta: 72.4 MB). Free memory was 132.5 MB in the beginning and 121.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 84.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:20,209 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 158.3 MB. Free memory is still 140.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:50:20,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.61 ms. Allocated memory is still 158.3 MB. Free memory was 132.3 MB in the beginning and 122.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:20,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.83 ms. Allocated memory is still 158.3 MB. Free memory was 122.1 MB in the beginning and 120.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:20,210 INFO L168 Benchmark]: Boogie Preprocessor took 37.82 ms. Allocated memory is still 158.3 MB. Free memory was 120.5 MB in the beginning and 119.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:20,211 INFO L168 Benchmark]: RCFGBuilder took 576.34 ms. Allocated memory is still 158.3 MB. Free memory was 119.2 MB in the beginning and 132.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:20,211 INFO L168 Benchmark]: TraceAbstraction took 11444.84 ms. Allocated memory was 158.3 MB in the beginning and 230.7 MB in the end (delta: 72.4 MB). Free memory was 132.2 MB in the beginning and 125.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 129.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:20,212 INFO L168 Benchmark]: Witness Printer took 76.38 ms. Allocated memory is still 230.7 MB. Free memory was 125.4 MB in the beginning and 121.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:50:20,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 158.3 MB. Free memory is still 140.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 309.61 ms. Allocated memory is still 158.3 MB. Free memory was 132.3 MB in the beginning and 122.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.83 ms. Allocated memory is still 158.3 MB. Free memory was 122.1 MB in the beginning and 120.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.82 ms. Allocated memory is still 158.3 MB. Free memory was 120.5 MB in the beginning and 119.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 576.34 ms. Allocated memory is still 158.3 MB. Free memory was 119.2 MB in the beginning and 132.7 MB in the end (delta: -13.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11444.84 ms. Allocated memory was 158.3 MB in the beginning and 230.7 MB in the end (delta: 72.4 MB). Free memory was 132.2 MB in the beginning and 125.4 MB in the end (delta: 6.9 MB). Peak memory consumption was 129.0 MB. Max. memory is 8.0 GB. * Witness Printer took 76.38 ms. Allocated memory is still 230.7 MB. Free memory was 125.4 MB in the beginning and 121.7 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((0 <= A && d == p * B) && 1 == cond) && B == d) && q == 0) && cond == 1) && A == r) && A <= 2) && d == 1) || ((((((((p == 4 && d == B * 4) && d == 4) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((0 <= A && d == 2) && 1 == cond) && p == 2) && q == 0) && cond == 1) && A == r) && A <= 2) && B * 2 == d) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((0 <= A && d == p * B) && B == d) && q == 0) && cond == 1) && A <= 2) && A == r) && d == 1) || ((((((((p == 4 && d == 4) && d == p * B) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((0 <= A && d == p * B) && d == 2) && 1 == cond) && p == 2) && q == 0) && cond == 1) && A == r) && A <= 2) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((((d == 2 && 1 == cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || ((((((((2 * B <= A && d == 2) && 1 == cond) && A == d + r) && q == p) && p == 2) && cond == 1) && A <= 2) && B * 2 == d)) || ((((((((p == 4 && d == 4) && d == p * B) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || (((((1 == cond && B == d) && q == p) && p == 1) && d == 1) && A == B + r)) || ((((((((B < (A + r * -1) / 2 + 1 && r < d) && q == 2) && 1 == cond) && B == d) && p == 1) && 0 <= r) && cond == 1) && A <= 2)) || (((((B == 1 && 1 == cond) && B == d) && p == 1) && q == 0) && A == r) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((0 <= A && d == p * B) && 1 == cond) && B == d) && q == 0) && cond == 1) && A == r) && A <= 2) && d == 1) || ((((((((d == B * 4 && d == 4) && d == p * B) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((0 <= A && d == 2) && 1 == cond) && p == 2) && q == 0) && cond == 1) && A == r) && A <= 2) && B * 2 == d) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((0 <= A && d == p * B) && 1 == cond) && B == d) && q == 0) && cond == 1) && A == r) && A <= 2) && d == 1) || ((((((((d == B * 4 && d == 4) && d == p * B) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((0 <= A && d == 2) && 1 == cond) && p == 2) && q == 0) && cond == 1) && A == r) && A <= 2) && B * 2 == d) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && !(0 == cond)) && B == d) && p == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((d == 2 && 1 == cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || ((((((((p == 4 && d == p * -1 / -2 * B * 2) && d == 4) && 1 == cond) && q == 0) && cond == 1) && A == r) && A <= 2) && d * -1 / -2 <= r)) || ((((((((2 * B <= A && d == 2) && 1 == cond) && A == d + r) && q == p) && p == 2) && cond == 1) && A <= 2) && B * 2 == d)) || (((((1 == cond && B == d) && q == p) && p == 1) && d == 1) && A == B + r)) || ((((((((B < (A + r * -1) / 2 + 1 && r < d) && q == 2) && 1 == cond) && B == d) && p == 1) && 0 <= r) && cond == 1) && A <= 2)) || (((((B == 1 && 1 == cond) && B == d) && p == 1) && q == 0) && A == r) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 319 SDtfs, 622 SDslu, 736 SDs, 0 SdLazy, 1517 SolverSat, 268 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 106 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 39 NumberOfFragments, 735 HoareAnnotationTreeSize, 9 FomulaSimplifications, 2405 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1233 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 327 NumberOfCodeBlocks, 313 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 122851 SizeOfPredicates, 110 NumberOfNonLiveVariables, 1217 ConjunctsInSsa, 351 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 28/185 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...