/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/ps5-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:59:47,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:59:47,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:59:47,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:59:47,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:59:47,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:59:47,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:59:47,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:59:47,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:59:47,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:59:47,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:59:47,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:59:47,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:59:47,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:59:47,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:59:47,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:59:47,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:59:47,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:59:47,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:59:47,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:59:47,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:59:47,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:59:47,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:59:47,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:59:47,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:59:47,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:59:47,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:59:47,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:59:47,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:59:47,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:59:47,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:59:47,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:59:47,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:59:47,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:59:47,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:59:47,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:59:47,842 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 17:59:47,892 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:59:47,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:59:47,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:59:47,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:59:47,899 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:59:47,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:59:47,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:59:47,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:59:47,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:59:47,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:59:47,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:59:47,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:59:47,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:59:47,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:59:47,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:59:47,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:59:47,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:59:47,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:59:47,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:59:47,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:59:47,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:59:47,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:59:47,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:59:47,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:59:47,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:59:47,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:59:48,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:59:48,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:59:48,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:59:48,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:59:48,415 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:59:48,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound100.c [2021-01-06 17:59:48,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f02ef4df4/2b874c892f8e410aa8797ee3a0c06af4/FLAG9437f6682 [2021-01-06 17:59:49,181 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:59:49,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound100.c [2021-01-06 17:59:49,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f02ef4df4/2b874c892f8e410aa8797ee3a0c06af4/FLAG9437f6682 [2021-01-06 17:59:49,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f02ef4df4/2b874c892f8e410aa8797ee3a0c06af4 [2021-01-06 17:59:49,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:59:49,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:59:49,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:59:49,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:59:49,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:59:49,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461b5ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49, skipping insertion in model container [2021-01-06 17:59:49,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:59:49,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:59:49,746 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/ps5-ll_unwindbound100.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 17:59:49,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:59:49,780 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:59:49,795 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/ps5-ll_unwindbound100.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 17:59:49,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:59:49,823 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:59:49,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49 WrapperNode [2021-01-06 17:59:49,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:59:49,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:59:49,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:59:49,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:59:49,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:59:49,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:59:49,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:59:49,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:59:49,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (1/1) ... [2021-01-06 17:59:49,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:59:49,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:59:49,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:59:49,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:59:49,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (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 17:59:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:59:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:59:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:59:50,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:59:50,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:59:50,364 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:59:50,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:59:50 BoogieIcfgContainer [2021-01-06 17:59:50,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:59:50,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:59:50,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:59:50,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:59:50,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:59:49" (1/3) ... [2021-01-06 17:59:50,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b1065c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:59:50, skipping insertion in model container [2021-01-06 17:59:50,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:59:49" (2/3) ... [2021-01-06 17:59:50,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b1065c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:59:50, skipping insertion in model container [2021-01-06 17:59:50,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:59:50" (3/3) ... [2021-01-06 17:59:50,377 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound100.c [2021-01-06 17:59:50,385 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:59:50,392 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-01-06 17:59:50,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-01-06 17:59:50,460 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:59:50,463 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:59:50,463 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:59:50,464 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:59:50,464 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:59:50,464 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:59:50,464 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:59:50,464 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:59:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-01-06 17:59:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:59:50,517 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:50,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:50,521 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:50,543 INFO L82 PathProgramCache]: Analyzing trace with hash 120120651, now seen corresponding path program 1 times [2021-01-06 17:59:50,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:50,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973046396] [2021-01-06 17:59:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:50,749 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 17:59:50,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973046396] [2021-01-06 17:59:50,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:59:50,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:59:50,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237658773] [2021-01-06 17:59:50,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:59:50,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:50,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:59:50,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:59:50,778 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2021-01-06 17:59:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:50,799 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-01-06 17:59:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:59:50,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-01-06 17:59:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:50,811 INFO L225 Difference]: With dead ends: 41 [2021-01-06 17:59:50,812 INFO L226 Difference]: Without dead ends: 18 [2021-01-06 17:59:50,815 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 17:59:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-06 17:59:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-01-06 17:59:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-06 17:59:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-01-06 17:59:50,856 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-01-06 17:59:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:50,856 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-01-06 17:59:50,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:59:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-01-06 17:59:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-06 17:59:50,857 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:50,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:50,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:59:50,858 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:50,859 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2021-01-06 17:59:50,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:50,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242115495] [2021-01-06 17:59:50,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:50,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:50,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880300514] [2021-01-06 17:59:50,879 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 17:59:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:51,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:59:51,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:51,137 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 17:59:51,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242115495] [2021-01-06 17:59:51,138 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:51,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880300514] [2021-01-06 17:59:51,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:59:51,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:59:51,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928957494] [2021-01-06 17:59:51,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:59:51,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:51,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:59:51,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:59:51,143 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2021-01-06 17:59:51,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:51,304 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-01-06 17:59:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:59:51,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2021-01-06 17:59:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:51,306 INFO L225 Difference]: With dead ends: 36 [2021-01-06 17:59:51,306 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 17:59:51,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:59:51,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 17:59:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-01-06 17:59:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:59:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-01-06 17:59:51,315 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2021-01-06 17:59:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:51,315 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-01-06 17:59:51,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:59:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-01-06 17:59:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:59:51,316 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:51,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:51,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:59:51,531 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:51,533 INFO L82 PathProgramCache]: Analyzing trace with hash -938089448, now seen corresponding path program 1 times [2021-01-06 17:59:51,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:51,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232971503] [2021-01-06 17:59:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:51,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:51,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184341074] [2021-01-06 17:59:51,550 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 17:59:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:51,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:59:51,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:51,702 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 17:59:51,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232971503] [2021-01-06 17:59:51,702 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:51,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184341074] [2021-01-06 17:59:51,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:59:51,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:59:51,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73048951] [2021-01-06 17:59:51,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:59:51,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:59:51,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:59:51,705 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2021-01-06 17:59:51,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:51,891 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-01-06 17:59:51,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:59:51,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-01-06 17:59:51,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:51,893 INFO L225 Difference]: With dead ends: 39 [2021-01-06 17:59:51,893 INFO L226 Difference]: Without dead ends: 35 [2021-01-06 17:59:51,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:59:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-01-06 17:59:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2021-01-06 17:59:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 17:59:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-01-06 17:59:51,902 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2021-01-06 17:59:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:51,902 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-01-06 17:59:51,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:59:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-01-06 17:59:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:59:51,903 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:51,904 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:52,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:59:52,110 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:52,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash 687671895, now seen corresponding path program 1 times [2021-01-06 17:59:52,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:52,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010772680] [2021-01-06 17:59:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:52,127 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:52,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [958815976] [2021-01-06 17:59:52,128 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 17:59:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:52,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:59:52,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:59:52,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010772680] [2021-01-06 17:59:52,245 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:52,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958815976] [2021-01-06 17:59:52,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:59:52,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:59:52,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909196308] [2021-01-06 17:59:52,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:59:52,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:52,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:59:52,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:59:52,248 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2021-01-06 17:59:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:52,287 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-01-06 17:59:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:59:52,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-01-06 17:59:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:52,289 INFO L225 Difference]: With dead ends: 34 [2021-01-06 17:59:52,290 INFO L226 Difference]: Without dead ends: 28 [2021-01-06 17:59:52,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:59:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-01-06 17:59:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-01-06 17:59:52,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-01-06 17:59:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-01-06 17:59:52,307 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2021-01-06 17:59:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:52,307 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-01-06 17:59:52,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:59:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-01-06 17:59:52,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:59:52,308 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:52,308 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:52,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:59:52,510 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:52,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1290921348, now seen corresponding path program 2 times [2021-01-06 17:59:52,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:52,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354062733] [2021-01-06 17:59:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:52,530 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:52,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1524384008] [2021-01-06 17:59:52,531 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 17:59:52,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:59:52,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:59:52,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 30 conjunts are in the unsatisfiable core [2021-01-06 17:59:52,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:59:52,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354062733] [2021-01-06 17:59:52,819 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:52,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524384008] [2021-01-06 17:59:52,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:59:52,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:59:52,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857394957] [2021-01-06 17:59:52,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:59:52,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:59:52,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:59:52,823 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2021-01-06 17:59:52,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:52,995 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-01-06 17:59:52,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:59:52,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2021-01-06 17:59:52,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:52,998 INFO L225 Difference]: With dead ends: 49 [2021-01-06 17:59:52,998 INFO L226 Difference]: Without dead ends: 45 [2021-01-06 17:59:52,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:59:52,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-06 17:59:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2021-01-06 17:59:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-01-06 17:59:53,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-01-06 17:59:53,007 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2021-01-06 17:59:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:53,008 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-01-06 17:59:53,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:59:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-01-06 17:59:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:59:53,009 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:53,009 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:53,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:59:53,213 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:53,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1329593552, now seen corresponding path program 1 times [2021-01-06 17:59:53,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:53,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640761462] [2021-01-06 17:59:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:53,228 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:53,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153513519] [2021-01-06 17:59:53,229 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 17:59:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:59:53,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2021-01-06 17:59:53,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:53,378 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:59:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:59:53,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640761462] [2021-01-06 17:59:53,393 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:53,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153513519] [2021-01-06 17:59:53,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:59:53,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:59:53,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054795914] [2021-01-06 17:59:53,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:59:53,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:53,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:59:53,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:59:53,396 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2021-01-06 17:59:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:53,602 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-01-06 17:59:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:59:53,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2021-01-06 17:59:53,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:53,604 INFO L225 Difference]: With dead ends: 38 [2021-01-06 17:59:53,604 INFO L226 Difference]: Without dead ends: 32 [2021-01-06 17:59:53,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:59:53,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-01-06 17:59:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-01-06 17:59:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-01-06 17:59:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-01-06 17:59:53,620 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 17 [2021-01-06 17:59:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:53,621 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-01-06 17:59:53,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:59:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-01-06 17:59:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 17:59:53,622 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:53,623 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:53,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:59:53,836 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:53,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:53,837 INFO L82 PathProgramCache]: Analyzing trace with hash 658932075, now seen corresponding path program 2 times [2021-01-06 17:59:53,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:53,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278999821] [2021-01-06 17:59:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:53,850 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:53,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164133581] [2021-01-06 17:59:53,851 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 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 17:59:53,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:59:53,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:59:53,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:59:53,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:59:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:59:53,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278999821] [2021-01-06 17:59:53,988 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:59:53,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164133581] [2021-01-06 17:59:53,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:59:53,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:59:53,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148951782] [2021-01-06 17:59:53,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:59:53,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:59:53,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:59:53,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:59:53,991 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2021-01-06 17:59:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:59:54,042 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-01-06 17:59:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:59:54,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2021-01-06 17:59:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:59:54,047 INFO L225 Difference]: With dead ends: 38 [2021-01-06 17:59:54,047 INFO L226 Difference]: Without dead ends: 32 [2021-01-06 17:59:54,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:59:54,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-01-06 17:59:54,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-01-06 17:59:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-01-06 17:59:54,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-01-06 17:59:54,063 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 19 [2021-01-06 17:59:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:59:54,064 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-01-06 17:59:54,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:59:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-01-06 17:59:54,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 17:59:54,065 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:59:54,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-06 17:59:54,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:59:54,281 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:59:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:59:54,282 INFO L82 PathProgramCache]: Analyzing trace with hash 399986928, now seen corresponding path program 3 times [2021-01-06 17:59:54,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:59:54,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498102651] [2021-01-06 17:59:54,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:59:54,295 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:59:54,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [371859403] [2021-01-06 17:59:54,295 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 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