/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/ps6-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 18:07:05,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 18:07:05,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 18:07:05,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 18:07:05,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 18:07:05,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 18:07:05,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 18:07:05,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 18:07:05,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 18:07:05,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 18:07:05,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 18:07:05,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 18:07:05,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 18:07:05,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 18:07:05,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 18:07:05,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 18:07:05,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 18:07:05,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 18:07:05,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 18:07:05,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 18:07:05,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 18:07:05,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 18:07:05,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 18:07:05,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 18:07:05,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 18:07:05,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 18:07:05,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 18:07:05,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 18:07:05,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 18:07:05,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 18:07:05,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 18:07:05,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 18:07:05,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 18:07:05,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 18:07:05,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 18:07:05,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 18:07:05,826 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 18:07:05,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 18:07:05,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 18:07:05,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 18:07:05,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 18:07:05,877 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 18:07:05,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 18:07:05,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 18:07:05,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 18:07:05,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 18:07:05,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 18:07:05,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 18:07:05,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 18:07:05,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 18:07:05,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 18:07:05,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 18:07:05,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 18:07:05,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 18:07:05,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 18:07:05,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 18:07:05,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 18:07:05,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 18:07:05,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 18:07:05,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 18:07:05,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 18:07:05,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 18:07:05,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 18:07:06,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 18:07:06,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 18:07:06,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 18:07:06,364 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 18:07:06,365 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 18:07:06,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2021-01-06 18:07:06,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a56ff23b6/3d950267b4ec4fad9eff3bf61eeb8c36/FLAG563aaf719 [2021-01-06 18:07:07,046 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 18:07:07,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2021-01-06 18:07:07,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a56ff23b6/3d950267b4ec4fad9eff3bf61eeb8c36/FLAG563aaf719 [2021-01-06 18:07:07,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a56ff23b6/3d950267b4ec4fad9eff3bf61eeb8c36 [2021-01-06 18:07:07,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 18:07:07,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 18:07:07,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 18:07:07,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 18:07:07,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 18:07:07,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b971a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07, skipping insertion in model container [2021-01-06 18:07:07,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 18:07:07,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 18:07:07,582 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/ps6-ll_valuebound10.c[458,471] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 18:07:07,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 18:07:07,614 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 18:07:07,629 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/ps6-ll_valuebound10.c[458,471] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 18:07:07,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 18:07:07,656 INFO L208 MainTranslator]: Completed translation [2021-01-06 18:07:07,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07 WrapperNode [2021-01-06 18:07:07,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 18:07:07,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 18:07:07,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 18:07:07,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 18:07:07,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 18:07:07,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 18:07:07,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 18:07:07,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 18:07:07,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (1/1) ... [2021-01-06 18:07:07,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 18:07:07,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 18:07:07,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 18:07:07,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 18:07:07,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (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 18:07:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 18:07:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 18:07:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 18:07:07,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 18:07:08,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 18:07:08,109 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-01-06 18:07:08,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 06:07:08 BoogieIcfgContainer [2021-01-06 18:07:08,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 18:07:08,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 18:07:08,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 18:07:08,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 18:07:08,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 06:07:07" (1/3) ... [2021-01-06 18:07:08,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f56676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 06:07:08, skipping insertion in model container [2021-01-06 18:07:08,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 06:07:07" (2/3) ... [2021-01-06 18:07:08,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f56676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 06:07:08, skipping insertion in model container [2021-01-06 18:07:08,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 06:07:08" (3/3) ... [2021-01-06 18:07:08,120 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound10.c [2021-01-06 18:07:08,126 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 18:07:08,131 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-01-06 18:07:08,153 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-06 18:07:08,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 18:07:08,188 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 18:07:08,188 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 18:07:08,188 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 18:07:08,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 18:07:08,189 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 18:07:08,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 18:07:08,189 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 18:07:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-06 18:07:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 18:07:08,215 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:07:08,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:07:08,216 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:07:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:07:08,225 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-01-06 18:07:08,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:07:08,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507005741] [2021-01-06 18:07:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:07:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:07:08,475 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 18:07:08,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507005741] [2021-01-06 18:07:08,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:07:08,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 18:07:08,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621273470] [2021-01-06 18:07:08,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 18:07:08,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:07:08,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 18:07:08,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 18:07:08,516 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-01-06 18:07:08,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:07:08,542 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-01-06 18:07:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 18:07:08,544 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 18:07:08,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:07:08,564 INFO L225 Difference]: With dead ends: 43 [2021-01-06 18:07:08,568 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 18:07:08,573 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 18:07:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 18:07:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 18:07:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 18:07:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-01-06 18:07:08,617 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-01-06 18:07:08,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:07:08,618 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-01-06 18:07:08,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 18:07:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-01-06 18:07:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 18:07:08,618 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:07:08,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:07:08,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 18:07:08,620 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:07:08,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:07:08,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-01-06 18:07:08,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:07:08,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530320325] [2021-01-06 18:07:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:07:08,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:07:08,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [81376665] [2021-01-06 18:07:08,681 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 18:07:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:07:08,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 18:07:08,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:07:08,876 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 18:07:08,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530320325] [2021-01-06 18:07:08,877 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:07:08,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81376665] [2021-01-06 18:07:08,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 18:07:08,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 18:07:08,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837207218] [2021-01-06 18:07:08,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 18:07:08,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:07:08,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 18:07:08,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 18:07:08,881 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2021-01-06 18:07:11,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:07:11,302 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-01-06 18:07:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 18:07:11,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-01-06 18:07:11,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:07:11,304 INFO L225 Difference]: With dead ends: 33 [2021-01-06 18:07:11,304 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 18:07:11,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 18:07:11,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 18:07:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-01-06 18:07:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 18:07:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-01-06 18:07:11,316 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2021-01-06 18:07:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:07:11,316 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-01-06 18:07:11,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 18:07:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-01-06 18:07:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 18:07:11,317 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:07:11,317 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:07:11,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 18:07:11,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:07:11,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:07:11,538 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-01-06 18:07:11,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:07:11,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892880711] [2021-01-06 18:07:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:07:11,556 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:07:11,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964351822] [2021-01-06 18:07:11,557 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 18:07:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:07:11,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 18:07:11,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:07:11,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:07:11,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892880711] [2021-01-06 18:07:11,675 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:07:11,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964351822] [2021-01-06 18:07:11,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:07:11,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 18:07:11,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004051285] [2021-01-06 18:07:11,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 18:07:11,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:07:11,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 18:07:11,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 18:07:11,678 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2021-01-06 18:07:11,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:07:11,917 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-01-06 18:07:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 18:07:11,918 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 18:07:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:07:11,919 INFO L225 Difference]: With dead ends: 36 [2021-01-06 18:07:11,919 INFO L226 Difference]: Without dead ends: 32 [2021-01-06 18:07:11,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-06 18:07:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-01-06 18:07:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-01-06 18:07:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 18:07:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-01-06 18:07:11,928 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 12 [2021-01-06 18:07:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:07:11,929 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-01-06 18:07:11,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 18:07:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-01-06 18:07:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 18:07:11,930 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:07:11,930 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:07:12,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:07:12,144 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:07:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:07:12,145 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-01-06 18:07:12,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:07:12,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201499149] [2021-01-06 18:07:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:07:12,163 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:07:12,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117993691] [2021-01-06 18:07:12,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 18:07:12,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 18:07:12,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 18:07:12,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 25 conjunts are in the unsatisfiable core [2021-01-06 18:07:12,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:07:12,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:07:12,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201499149] [2021-01-06 18:07:12,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:07:12,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117993691] [2021-01-06 18:07:12,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:07:12,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 18:07:12,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395501871] [2021-01-06 18:07:12,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 18:07:12,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:07:12,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 18:07:12,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 18:07:12,419 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2021-01-06 18:07:12,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:07:12,552 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-01-06 18:07:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 18:07:12,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-01-06 18:07:12,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:07:12,554 INFO L225 Difference]: With dead ends: 45 [2021-01-06 18:07:12,554 INFO L226 Difference]: Without dead ends: 41 [2021-01-06 18:07:12,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 18:07:12,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-06 18:07:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2021-01-06 18:07:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-06 18:07:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-01-06 18:07:12,562 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2021-01-06 18:07:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:07:12,562 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-01-06 18:07:12,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 18:07:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-01-06 18:07:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 18:07:12,563 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:07:12,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:07:12,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:07:12,770 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:07:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:07:12,771 INFO L82 PathProgramCache]: Analyzing trace with hash -531865812, now seen corresponding path program 1 times [2021-01-06 18:07:12,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:07:12,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098215697] [2021-01-06 18:07:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:07:12,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:07:12,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363671894] [2021-01-06 18:07:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:07:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 18:07:12,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 18:07:12,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 18:07:12,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 18:07:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 18:07:13,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098215697] [2021-01-06 18:07:13,005 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 18:07:13,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363671894] [2021-01-06 18:07:13,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 18:07:13,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 18:07:13,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161060794] [2021-01-06 18:07:13,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 18:07:13,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 18:07:13,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 18:07:13,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 18:07:13,007 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2021-01-06 18:07:13,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 18:07:13,228 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-01-06 18:07:13,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 18:07:13,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-01-06 18:07:13,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 18:07:13,230 INFO L225 Difference]: With dead ends: 36 [2021-01-06 18:07:13,230 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 18:07:13,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-01-06 18:07:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 18:07:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-01-06 18:07:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-06 18:07:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-01-06 18:07:13,237 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2021-01-06 18:07:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 18:07:13,238 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-01-06 18:07:13,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 18:07:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-01-06 18:07:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 18:07:13,238 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 18:07:13,239 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 18:07:13,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 18:07:13,455 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 18:07:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 18:07:13,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-01-06 18:07:13,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 18:07:13,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760584960] [2021-01-06 18:07:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 18:07:13,474 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 18:07:13,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396339151] [2021-01-06 18:07:13,477 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 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