/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:25:28,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:25:28,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:25:28,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:25:28,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:25:28,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:25:28,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:25:28,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:25:28,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:25:28,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:25:28,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:25:28,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:25:28,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:25:28,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:25:28,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:25:28,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:25:28,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:25:28,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:25:28,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:25:28,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:25:28,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:25:28,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:25:28,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:25:28,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:25:28,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:25:28,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:25:28,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:25:28,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:25:28,686 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 17:25:28,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:25:28,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:25:28,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:25:28,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:25:28,740 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:25:28,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:25:28,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:25:28,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:25:28,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:25:28,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:25:28,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:25:28,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:25:28,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:25:28,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:25:28,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:25:28,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:25:28,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:25:28,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:25:28,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:25:28,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:25:28,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:25:28,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:25:28,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:25:28,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:25:28,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:25:28,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:25:29,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:25:29,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:25:29,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:25:29,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:25:29,211 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:25:29,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c [2021-01-06 17:25:29,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5a6f3c7c/ed0332a0b964400e9847571e676e5bdc/FLAG4569ef04f [2021-01-06 17:25:29,884 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:25:29,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c [2021-01-06 17:25:29,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5a6f3c7c/ed0332a0b964400e9847571e676e5bdc/FLAG4569ef04f [2021-01-06 17:25:30,237 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/e5a6f3c7c/ed0332a0b964400e9847571e676e5bdc [2021-01-06 17:25:30,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:25:30,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:25:30,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:25:30,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:25:30,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:25:30,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40e48db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30, skipping insertion in model container [2021-01-06 17:25:30,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:25:30,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:25:30,480 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:25:30,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:25:30,533 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:25:30,548 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c[525,538] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~q~0,] left hand side expression in assignment: lhs: VariableLHS[~h~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~p~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 17:25:30,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:25:30,583 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:25:30,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30 WrapperNode [2021-01-06 17:25:30,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:25:30,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:25:30,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:25:30,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:25:30,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:25:30,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:25:30,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:25:30,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:25:30,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (1/1) ... [2021-01-06 17:25:30,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:25:30,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:25:30,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:25:30,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:25:30,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (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 17:25:30,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:25:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:25:30,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:25:30,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:25:33,384 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:25:33,384 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2021-01-06 17:25:33,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:25:33 BoogieIcfgContainer [2021-01-06 17:25:33,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:25:33,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:25:33,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:25:33,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:25:33,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:25:30" (1/3) ... [2021-01-06 17:25:33,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2125c199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:25:33, skipping insertion in model container [2021-01-06 17:25:33,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:25:30" (2/3) ... [2021-01-06 17:25:33,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2125c199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:25:33, skipping insertion in model container [2021-01-06 17:25:33,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:25:33" (3/3) ... [2021-01-06 17:25:33,395 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound50.c [2021-01-06 17:25:33,401 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:25:33,406 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2021-01-06 17:25:33,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-01-06 17:25:33,451 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:25:33,451 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:25:33,452 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:25:33,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:25:33,452 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:25:33,452 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:25:33,452 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:25:33,452 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:25:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2021-01-06 17:25:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:25:33,473 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:25:33,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:25:33,475 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:25:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:25:33,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2021-01-06 17:25:33,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:25:33,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882528879] [2021-01-06 17:25:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:25:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:25:33,656 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 17:25:33,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882528879] [2021-01-06 17:25:33,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:25:33,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:25:33,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541761763] [2021-01-06 17:25:33,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:25:33,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:25:33,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:25:33,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:25:33,691 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2021-01-06 17:25:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:25:33,730 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2021-01-06 17:25:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:25:33,731 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:25:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:25:33,751 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:25:33,751 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 17:25:33,756 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 17:25:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 17:25:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-01-06 17:25:33,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:25:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-01-06 17:25:33,806 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2021-01-06 17:25:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:25:33,806 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-01-06 17:25:33,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:25:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-01-06 17:25:33,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:25:33,807 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:25:33,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:25:33,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:25:33,808 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:25:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:25:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2021-01-06 17:25:33,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:25:33,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473010813] [2021-01-06 17:25:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:25:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:25:34,156 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 17:25:34,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473010813] [2021-01-06 17:25:34,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:25:34,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:25:34,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188289197] [2021-01-06 17:25:34,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:25:34,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:25:34,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:25:34,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:25:34,161 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2021-01-06 17:25:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:25:51,684 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-01-06 17:25:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:25:51,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 17:25:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:25:51,687 INFO L225 Difference]: With dead ends: 110 [2021-01-06 17:25:51,687 INFO L226 Difference]: Without dead ends: 68 [2021-01-06 17:25:51,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:25:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-01-06 17:25:51,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2021-01-06 17:25:51,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-01-06 17:25:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-01-06 17:25:51,702 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2021-01-06 17:25:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:25:51,703 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-01-06 17:25:51,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:25:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-01-06 17:25:51,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:25:51,704 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:25:51,704 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:25:51,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:25:51,705 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:25:51,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:25:51,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2021-01-06 17:25:51,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:25:51,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127840127] [2021-01-06 17:25:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:25:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:25:52,054 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 17:25:52,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127840127] [2021-01-06 17:25:52,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264460695] [2021-01-06 17:25:52,055 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 17:25:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:25:52,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2021-01-06 17:25:52,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:25:52,366 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:25:52,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:25:52,422 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 17:25:52,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:25:52,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-01-06 17:25:52,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849392838] [2021-01-06 17:25:52,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:25:52,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:25:52,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:25:52,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:25:52,431 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 9 states. [2021-01-06 17:26:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:18,106 INFO L93 Difference]: Finished difference Result 197 states and 228 transitions. [2021-01-06 17:26:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 17:26:18,110 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2021-01-06 17:26:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:18,112 INFO L225 Difference]: With dead ends: 197 [2021-01-06 17:26:18,112 INFO L226 Difference]: Without dead ends: 151 [2021-01-06 17:26:18,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:26:18,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-01-06 17:26:18,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 112. [2021-01-06 17:26:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-01-06 17:26:18,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-01-06 17:26:18,139 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 13 [2021-01-06 17:26:18,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:18,140 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-01-06 17:26:18,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:26:18,140 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-01-06 17:26:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:26:18,141 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:18,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:18,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-06 17:26:18,343 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:18,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:18,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2021-01-06 17:26:18,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:18,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236351813] [2021-01-06 17:26:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:18,360 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:18,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238579119] [2021-01-06 17:26:18,361 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 17:26:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:18,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:26:18,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:18,570 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 17:26:18,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236351813] [2021-01-06 17:26:18,571 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:18,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238579119] [2021-01-06 17:26:18,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:26:18,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:26:18,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773298800] [2021-01-06 17:26:18,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:26:18,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:18,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:26:18,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:26:18,577 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 6 states. [2021-01-06 17:26:28,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:28,145 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2021-01-06 17:26:28,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:26:28,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:26:28,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:28,153 INFO L225 Difference]: With dead ends: 121 [2021-01-06 17:26:28,153 INFO L226 Difference]: Without dead ends: 119 [2021-01-06 17:26:28,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:26:28,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-01-06 17:26:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2021-01-06 17:26:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 17:26:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-01-06 17:26:28,177 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 15 [2021-01-06 17:26:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:28,178 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-01-06 17:26:28,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:26:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-01-06 17:26:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:26:28,179 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:28,179 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:28,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:28,395 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2021-01-06 17:26:28,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:28,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131496341] [2021-01-06 17:26:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:28,418 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:28,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225587889] [2021-01-06 17:26:28,419 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 17:26:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:28,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:26:28,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 17:26:28,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131496341] [2021-01-06 17:26:28,624 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:28,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225587889] [2021-01-06 17:26:28,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:26:28,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:26:28,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315192561] [2021-01-06 17:26:28,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:26:28,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:28,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:26:28,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:26:28,627 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand 6 states. [2021-01-06 17:26:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:31,463 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2021-01-06 17:26:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:26:31,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-06 17:26:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:31,465 INFO L225 Difference]: With dead ends: 129 [2021-01-06 17:26:31,465 INFO L226 Difference]: Without dead ends: 110 [2021-01-06 17:26:31,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:26:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-01-06 17:26:31,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-01-06 17:26:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2021-01-06 17:26:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-01-06 17:26:31,482 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 17 [2021-01-06 17:26:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:31,482 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-01-06 17:26:31,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:26:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-01-06 17:26:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-01-06 17:26:31,484 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:31,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:31,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:31,688 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:31,689 INFO L82 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2021-01-06 17:26:31,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:31,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730743505] [2021-01-06 17:26:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:31,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:31,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121964329] [2021-01-06 17:26:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:31,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2021-01-06 17:26:31,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:32,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:26:32,217 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:26:32,252 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 17:26:32,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730743505] [2021-01-06 17:26:32,253 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:32,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121964329] [2021-01-06 17:26:32,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:26:32,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:26:32,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632206865] [2021-01-06 17:26:32,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:26:32,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:32,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:26:32,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:26:32,255 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 9 states. [2021-01-06 17:26:52,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:26:52,861 INFO L93 Difference]: Finished difference Result 180 states and 194 transitions. [2021-01-06 17:26:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:26:52,863 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2021-01-06 17:26:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:26:52,865 INFO L225 Difference]: With dead ends: 180 [2021-01-06 17:26:52,865 INFO L226 Difference]: Without dead ends: 127 [2021-01-06 17:26:52,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:26:52,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-01-06 17:26:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2021-01-06 17:26:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-01-06 17:26:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2021-01-06 17:26:52,902 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 27 [2021-01-06 17:26:52,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:26:52,902 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2021-01-06 17:26:52,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:26:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2021-01-06 17:26:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:26:52,907 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:26:52,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:26:53,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:26:53,111 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:26:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:26:53,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2021-01-06 17:26:53,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:26:53,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249453071] [2021-01-06 17:26:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:26:53,138 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:26:53,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351943514] [2021-01-06 17:26:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:26:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:26:53,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2021-01-06 17:26:53,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:26:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:26:53,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249453071] [2021-01-06 17:26:53,920 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:26:53,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351943514] [2021-01-06 17:26:53,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:26:53,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:26:53,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856844718] [2021-01-06 17:26:53,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:26:53,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:26:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:26:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:26:53,923 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand 10 states. [2021-01-06 17:27:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:12,549 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2021-01-06 17:27:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:27:12,550 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2021-01-06 17:27:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:12,551 INFO L225 Difference]: With dead ends: 130 [2021-01-06 17:27:12,551 INFO L226 Difference]: Without dead ends: 124 [2021-01-06 17:27:12,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:27:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-01-06 17:27:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 108. [2021-01-06 17:27:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2021-01-06 17:27:12,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-01-06 17:27:12,563 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 29 [2021-01-06 17:27:12,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:12,563 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-01-06 17:27:12,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:27:12,564 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-01-06 17:27:12,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:27:12,565 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:12,565 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:12,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-06 17:27:12,771 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:12,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1667347652, now seen corresponding path program 2 times [2021-01-06 17:27:12,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:12,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288797488] [2021-01-06 17:27:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:12,808 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:12,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40533288] [2021-01-06 17:27:12,812 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 17:27:13,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:27:13,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:13,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 26 conjunts are in the unsatisfiable core [2021-01-06 17:27:13,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:13,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:27:13,282 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:27:13,322 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 17:27:13,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288797488] [2021-01-06 17:27:13,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:13,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40533288] [2021-01-06 17:27:13,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:13,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:27:13,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378504841] [2021-01-06 17:27:13,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:27:13,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:13,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:27:13,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:27:13,326 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2021-01-06 17:27:21,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:21,554 INFO L93 Difference]: Finished difference Result 187 states and 207 transitions. [2021-01-06 17:27:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-01-06 17:27:21,555 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2021-01-06 17:27:21,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:21,556 INFO L225 Difference]: With dead ends: 187 [2021-01-06 17:27:21,556 INFO L226 Difference]: Without dead ends: 131 [2021-01-06 17:27:21,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-01-06 17:27:21,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-01-06 17:27:21,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2021-01-06 17:27:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2021-01-06 17:27:21,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-01-06 17:27:21,568 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 29 [2021-01-06 17:27:21,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:21,568 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-01-06 17:27:21,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:27:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-01-06 17:27:21,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:27:21,570 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:21,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:21,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:21,775 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:21,776 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2021-01-06 17:27:21,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:21,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884627286] [2021-01-06 17:27:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:21,791 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:21,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293324808] [2021-01-06 17:27:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:27:22,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:27:22,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:22,567 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 17:27:22,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884627286] [2021-01-06 17:27:22,567 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:22,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293324808] [2021-01-06 17:27:22,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:22,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:27:22,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29565773] [2021-01-06 17:27:22,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:27:22,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:22,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:27:22,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:27:22,570 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand 10 states. [2021-01-06 17:27:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:34,622 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-01-06 17:27:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:27:34,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 17:27:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:34,624 INFO L225 Difference]: With dead ends: 142 [2021-01-06 17:27:34,624 INFO L226 Difference]: Without dead ends: 123 [2021-01-06 17:27:34,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:27:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-01-06 17:27:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-01-06 17:27:34,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2021-01-06 17:27:34,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2021-01-06 17:27:34,639 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 31 [2021-01-06 17:27:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:34,639 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2021-01-06 17:27:34,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:27:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2021-01-06 17:27:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:27:34,646 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:34,647 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:34,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:34,848 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 298448647, now seen corresponding path program 2 times [2021-01-06 17:27:34,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:34,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271303491] [2021-01-06 17:27:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:34,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:34,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286423685] [2021-01-06 17:27:34,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:39,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:27:39,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:39,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 50 conjunts are in the unsatisfiable core [2021-01-06 17:27:39,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:40,492 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 19 [2021-01-06 17:27:40,874 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 17:27:40,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271303491] [2021-01-06 17:27:40,875 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:40,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286423685] [2021-01-06 17:27:40,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:40,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-01-06 17:27:40,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196580499] [2021-01-06 17:27:40,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 17:27:40,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:40,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 17:27:40,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:27:40,877 INFO L87 Difference]: Start difference. First operand 121 states and 130 transitions. Second operand 14 states. [2021-01-06 17:27:50,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:27:50,162 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2021-01-06 17:27:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:27:50,163 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2021-01-06 17:27:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:27:50,164 INFO L225 Difference]: With dead ends: 156 [2021-01-06 17:27:50,164 INFO L226 Difference]: Without dead ends: 140 [2021-01-06 17:27:50,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2021-01-06 17:27:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-01-06 17:27:50,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 132. [2021-01-06 17:27:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-01-06 17:27:50,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 144 transitions. [2021-01-06 17:27:50,175 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 144 transitions. Word has length 31 [2021-01-06 17:27:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:27:50,175 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 144 transitions. [2021-01-06 17:27:50,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 17:27:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 144 transitions. [2021-01-06 17:27:50,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:27:50,177 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:27:50,177 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:27:50,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-06 17:27:50,383 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:27:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:27:50,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1216942657, now seen corresponding path program 3 times [2021-01-06 17:27:50,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:27:50,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318224242] [2021-01-06 17:27:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:27:50,396 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:27:50,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055819024] [2021-01-06 17:27:50,397 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:27:50,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-01-06 17:27:50,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:27:50,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:27:50,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:27:51,252 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-01-06 17:27:51,562 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:27:51,618 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2021-01-06 17:27:51,858 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:51,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:52,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:52,107 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:52,206 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 19 disjuncts [2021-01-06 17:27:52,587 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:52,658 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:52,717 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:52,782 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:52,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:52,962 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:53,021 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:53,088 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:53,187 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 19 disjuncts [2021-01-06 17:27:53,530 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 21 disjuncts [2021-01-06 17:27:54,015 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:27:54,073 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:54,128 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:54,185 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:54,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:54,362 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:54,421 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:54,487 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:54,544 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:54,631 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 19 disjuncts [2021-01-06 17:27:54,981 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:55,038 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:55,095 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:55,146 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:55,249 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:55,301 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:55,355 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:55,406 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-01-06 17:27:55,485 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 19 disjuncts [2021-01-06 17:27:55,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 21 disjuncts [2021-01-06 17:27:56,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 22 disjuncts [2021-01-06 17:27:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-01-06 17:27:57,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318224242] [2021-01-06 17:27:57,821 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:27:57,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055819024] [2021-01-06 17:27:57,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:27:57,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:27:57,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796712694] [2021-01-06 17:27:57,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:27:57,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:27:57,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:27:57,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:27:57,823 INFO L87 Difference]: Start difference. First operand 132 states and 144 transitions. Second operand 10 states. [2021-01-06 17:28:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:44,363 INFO L93 Difference]: Finished difference Result 197 states and 210 transitions. [2021-01-06 17:28:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:28:44,368 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 17:28:44,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:44,369 INFO L225 Difference]: With dead ends: 197 [2021-01-06 17:28:44,369 INFO L226 Difference]: Without dead ends: 195 [2021-01-06 17:28:44,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:28:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-01-06 17:28:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 135. [2021-01-06 17:28:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2021-01-06 17:28:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 148 transitions. [2021-01-06 17:28:44,382 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 148 transitions. Word has length 31 [2021-01-06 17:28:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:44,383 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 148 transitions. [2021-01-06 17:28:44,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:28:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 148 transitions. [2021-01-06 17:28:44,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:28:44,386 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:44,386 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:44,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:44,596 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1216883075, now seen corresponding path program 1 times [2021-01-06 17:28:44,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:44,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625235160] [2021-01-06 17:28:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:44,607 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:44,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881197836] [2021-01-06 17:28:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:28:44,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:28:44,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:28:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:28:44,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625235160] [2021-01-06 17:28:44,900 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:28:44,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881197836] [2021-01-06 17:28:44,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:28:44,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:28:44,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50049059] [2021-01-06 17:28:44,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:28:44,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:28:44,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:28:44,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:28:44,902 INFO L87 Difference]: Start difference. First operand 135 states and 148 transitions. Second operand 8 states. [2021-01-06 17:28:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:28:56,266 INFO L93 Difference]: Finished difference Result 207 states and 228 transitions. [2021-01-06 17:28:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:28:56,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:28:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:28:56,268 INFO L225 Difference]: With dead ends: 207 [2021-01-06 17:28:56,268 INFO L226 Difference]: Without dead ends: 151 [2021-01-06 17:28:56,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:28:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-01-06 17:28:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-01-06 17:28:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-01-06 17:28:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2021-01-06 17:28:56,288 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 31 [2021-01-06 17:28:56,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:28:56,288 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2021-01-06 17:28:56,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:28:56,288 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2021-01-06 17:28:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:28:56,289 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:28:56,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:28:56,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:28:56,504 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:28:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:28:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1120732658, now seen corresponding path program 1 times [2021-01-06 17:28:56,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:28:56,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165179877] [2021-01-06 17:28:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:28:56,514 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:28:56,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646395663] [2021-01-06 17:28:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true