/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_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:23:00,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:23:00,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:23:00,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:23:00,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:23:00,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:23:00,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:23:00,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:23:00,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:23:00,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:23:00,469 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:23:00,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:23:00,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:23:00,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:23:00,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:23:00,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:23:00,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:23:00,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:23:00,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:23:00,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:23:00,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:23:00,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:23:00,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:23:00,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:23:00,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:23:00,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:23:00,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:23:00,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:23:00,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:23:00,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:23:00,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:23:00,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:23:00,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:23:00,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:23:00,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:23:00,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:23:00,537 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 17:23:00,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:23:00,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:23:00,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:23:00,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:23:00,589 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:23:00,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:23:00,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:23:00,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:23:00,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:23:00,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:23:00,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:23:00,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:23:00,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:23:00,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:23:00,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:23:00,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:23:00,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:23:00,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:23:00,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:23:00,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:23:00,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:23:00,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:23:00,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:23:00,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:23:00,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:23:00,595 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:23:01,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:23:01,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:23:01,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:23:01,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:23:01,067 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:23:01,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c [2021-01-06 17:23:01,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f29d09594/52b5b9dc52d544e0bd7f3194c3f353ee/FLAG41da1dcc7 [2021-01-06 17:23:01,813 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:23:01,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound100.c [2021-01-06 17:23:01,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f29d09594/52b5b9dc52d544e0bd7f3194c3f353ee/FLAG41da1dcc7 [2021-01-06 17:23:02,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f29d09594/52b5b9dc52d544e0bd7f3194c3f353ee [2021-01-06 17:23:02,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:23:02,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:23:02,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:23:02,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:23:02,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:23:02,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de810f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02, skipping insertion in model container [2021-01-06 17:23:02,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:23:02,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:23:02,403 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_unwindbound100.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 17:23:02,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:23:02,492 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:23:02,509 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_unwindbound100.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 17:23:02,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:23:02,581 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:23:02,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02 WrapperNode [2021-01-06 17:23:02,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:23:02,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:23:02,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:23:02,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:23:02,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:23:02,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:23:02,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:23:02,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:23:02,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (1/1) ... [2021-01-06 17:23:02,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:23:02,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:23:02,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:23:02,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:23:02,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (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 17:23:02,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:23:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:23:02,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:23:02,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:23:05,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:23:05,627 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-01-06 17:23:05,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:23:05 BoogieIcfgContainer [2021-01-06 17:23:05,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:23:05,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:23:05,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:23:05,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:23:05,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:23:02" (1/3) ... [2021-01-06 17:23:05,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e78838f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:23:05, skipping insertion in model container [2021-01-06 17:23:05,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:23:02" (2/3) ... [2021-01-06 17:23:05,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e78838f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:23:05, skipping insertion in model container [2021-01-06 17:23:05,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:23:05" (3/3) ... [2021-01-06 17:23:05,641 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound100.c [2021-01-06 17:23:05,648 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:23:05,653 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2021-01-06 17:23:05,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-01-06 17:23:05,701 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:23:05,701 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:23:05,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:23:05,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:23:05,701 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:23:05,702 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:23:05,702 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:23:05,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:23:05,720 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2021-01-06 17:23:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 17:23:05,726 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:05,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:05,727 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 17:23:05,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:05,734 INFO L82 PathProgramCache]: Analyzing trace with hash -578123657, now seen corresponding path program 1 times [2021-01-06 17:23:05,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:05,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708148449] [2021-01-06 17:23:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:05,909 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 17:23:05,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708148449] [2021-01-06 17:23:05,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:05,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:23:05,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013620670] [2021-01-06 17:23:05,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:23:05,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:05,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:23:05,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:23:05,937 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2021-01-06 17:23:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:05,964 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-01-06 17:23:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:23:05,966 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 17:23:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:05,978 INFO L225 Difference]: With dead ends: 97 [2021-01-06 17:23:05,978 INFO L226 Difference]: Without dead ends: 46 [2021-01-06 17:23:05,982 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 17:23:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-01-06 17:23:06,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-01-06 17:23:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 17:23:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-01-06 17:23:06,026 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2021-01-06 17:23:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:06,027 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-01-06 17:23:06,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:23:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-01-06 17:23:06,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:23:06,028 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:06,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:06,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:23:06,029 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 17:23:06,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:06,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2021-01-06 17:23:06,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:06,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739605068] [2021-01-06 17:23:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:06,117 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 17:23:06,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739605068] [2021-01-06 17:23:06,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:06,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:23:06,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689931404] [2021-01-06 17:23:06,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:23:06,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:06,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:23:06,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:23:06,125 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2021-01-06 17:23:06,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:06,185 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2021-01-06 17:23:06,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:23:06,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-01-06 17:23:06,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:06,189 INFO L225 Difference]: With dead ends: 87 [2021-01-06 17:23:06,189 INFO L226 Difference]: Without dead ends: 48 [2021-01-06 17:23:06,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:23:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-01-06 17:23:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-01-06 17:23:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 17:23:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-01-06 17:23:06,221 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2021-01-06 17:23:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:06,221 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-01-06 17:23:06,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:23:06,222 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-01-06 17:23:06,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:23:06,225 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:06,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:06,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 17:23:06,226 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 17:23:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:06,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2021-01-06 17:23:06,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:06,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907642952] [2021-01-06 17:23:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:06,593 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 17:23:06,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907642952] [2021-01-06 17:23:06,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:06,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:23:06,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178672254] [2021-01-06 17:23:06,595 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:06,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:06,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:06,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:06,603 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2021-01-06 17:23:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:13,403 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2021-01-06 17:23:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:13,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-01-06 17:23:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:13,406 INFO L225 Difference]: With dead ends: 116 [2021-01-06 17:23:13,406 INFO L226 Difference]: Without dead ends: 73 [2021-01-06 17:23:13,407 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 17:23:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-01-06 17:23:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2021-01-06 17:23:13,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 17:23:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2021-01-06 17:23:13,418 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11 [2021-01-06 17:23:13,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:13,418 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2021-01-06 17:23:13,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:13,419 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2021-01-06 17:23:13,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 17:23:13,419 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:13,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:13,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 17:23:13,420 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 17:23:13,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:13,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1083313625, now seen corresponding path program 1 times [2021-01-06 17:23:13,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:13,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522046034] [2021-01-06 17:23:13,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:13,436 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:13,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979933449] [2021-01-06 17:23:13,437 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 17:23:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:13,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:23:13,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:13,635 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 17:23:13,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522046034] [2021-01-06 17:23:13,637 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:13,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979933449] [2021-01-06 17:23:13,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:13,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:23:13,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308646075] [2021-01-06 17:23:13,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:13,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:13,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:13,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:13,645 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 5 states. [2021-01-06 17:23:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:13,697 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2021-01-06 17:23:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:23:13,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2021-01-06 17:23:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:13,703 INFO L225 Difference]: With dead ends: 70 [2021-01-06 17:23:13,704 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:23:13,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:23:13,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-01-06 17:23:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-06 17:23:13,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-01-06 17:23:13,730 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 12 [2021-01-06 17:23:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:13,730 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-01-06 17:23:13,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-01-06 17:23:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:23:13,732 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:13,732 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:13,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:13,948 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 17:23:13,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:13,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2047013432, now seen corresponding path program 1 times [2021-01-06 17:23:13,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:13,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688647632] [2021-01-06 17:23:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:14,067 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 17:23:14,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688647632] [2021-01-06 17:23:14,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026060875] [2021-01-06 17:23:14,069 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 17:23:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:14,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:23:14,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:14,190 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 17:23:14,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 17:23:14,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-01-06 17:23:14,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119604076] [2021-01-06 17:23:14,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:14,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:14,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:14,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:14,194 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2021-01-06 17:23:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:14,247 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2021-01-06 17:23:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:14,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2021-01-06 17:23:14,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:14,251 INFO L225 Difference]: With dead ends: 106 [2021-01-06 17:23:14,251 INFO L226 Difference]: Without dead ends: 67 [2021-01-06 17:23:14,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:14,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-01-06 17:23:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-01-06 17:23:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-01-06 17:23:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2021-01-06 17:23:14,275 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 13 [2021-01-06 17:23:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:14,276 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2021-01-06 17:23:14,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2021-01-06 17:23:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:23:14,277 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:14,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:14,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:14,494 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 17:23:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:14,495 INFO L82 PathProgramCache]: Analyzing trace with hash -918298294, now seen corresponding path program 1 times [2021-01-06 17:23:14,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:14,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675496709] [2021-01-06 17:23:14,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:23:14,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675496709] [2021-01-06 17:23:14,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:14,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-06 17:23:14,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955463351] [2021-01-06 17:23:14,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:14,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:14,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:23:14,666 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 5 states. [2021-01-06 17:23:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:23,452 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2021-01-06 17:23:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:23:23,453 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-01-06 17:23:23,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:23,455 INFO L225 Difference]: With dead ends: 136 [2021-01-06 17:23:23,455 INFO L226 Difference]: Without dead ends: 114 [2021-01-06 17:23:23,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:23:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-01-06 17:23:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 85. [2021-01-06 17:23:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-01-06 17:23:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2021-01-06 17:23:23,466 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 14 [2021-01-06 17:23:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:23,467 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2021-01-06 17:23:23,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:23,468 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2021-01-06 17:23:23,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:23:23,468 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:23,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:23,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 17:23:23,469 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 17:23:23,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:23,470 INFO L82 PathProgramCache]: Analyzing trace with hash -966633767, now seen corresponding path program 1 times [2021-01-06 17:23:23,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:23,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459235364] [2021-01-06 17:23:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:23,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:23,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540554842] [2021-01-06 17:23:23,485 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 17:23:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:23,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:23:23,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:23,733 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 17:23:23,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459235364] [2021-01-06 17:23:23,734 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:23,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540554842] [2021-01-06 17:23:23,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:23,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:23:23,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257903768] [2021-01-06 17:23:23,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:23:23,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:23,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:23:23,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:23,736 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 6 states. [2021-01-06 17:23:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:34,795 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2021-01-06 17:23:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:34,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:23:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:34,797 INFO L225 Difference]: With dead ends: 91 [2021-01-06 17:23:34,797 INFO L226 Difference]: Without dead ends: 71 [2021-01-06 17:23:34,797 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 17:23:34,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-01-06 17:23:34,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-01-06 17:23:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-01-06 17:23:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2021-01-06 17:23:34,804 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 15 [2021-01-06 17:23:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:34,805 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2021-01-06 17:23:34,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:23:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2021-01-06 17:23:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:23:34,806 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:34,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:35,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:35,021 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 17:23:35,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:35,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1597540912, now seen corresponding path program 1 times [2021-01-06 17:23:35,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:35,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643689501] [2021-01-06 17:23:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:35,043 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:35,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315137652] [2021-01-06 17:23:35,043 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 17:23:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:35,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:23:35,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:35,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643689501] [2021-01-06 17:23:35,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:35,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315137652] [2021-01-06 17:23:35,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:35,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:23:35,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343404357] [2021-01-06 17:23:35,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:23:35,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:35,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:23:35,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:35,161 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand 6 states. [2021-01-06 17:23:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:35,193 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2021-01-06 17:23:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:35,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-01-06 17:23:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:35,195 INFO L225 Difference]: With dead ends: 79 [2021-01-06 17:23:35,195 INFO L226 Difference]: Without dead ends: 75 [2021-01-06 17:23:35,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-01-06 17:23:35,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-01-06 17:23:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-06 17:23:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 85 transitions. [2021-01-06 17:23:35,202 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 85 transitions. Word has length 15 [2021-01-06 17:23:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:35,202 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 85 transitions. [2021-01-06 17:23:35,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:23:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 85 transitions. [2021-01-06 17:23:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:23:35,203 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:35,203 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:35,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:35,418 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 17:23:35,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:35,419 INFO L82 PathProgramCache]: Analyzing trace with hash -745841841, now seen corresponding path program 2 times [2021-01-06 17:23:35,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:35,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931543846] [2021-01-06 17:23:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:35,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931543846] [2021-01-06 17:23:35,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372099879] [2021-01-06 17:23:35,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:35,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-06 17:23:35,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:23:35,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-01-06 17:23:35,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-01-06 17:23:35,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:35,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-01-06 17:23:35,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435461181] [2021-01-06 17:23:35,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:23:35,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:35,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:23:35,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:23:35,662 INFO L87 Difference]: Start difference. First operand 74 states and 85 transitions. Second operand 5 states. [2021-01-06 17:23:35,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:35,738 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-01-06 17:23:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:23:35,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-06 17:23:35,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:35,741 INFO L225 Difference]: With dead ends: 136 [2021-01-06 17:23:35,742 INFO L226 Difference]: Without dead ends: 80 [2021-01-06 17:23:35,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:23:35,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-01-06 17:23:35,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2021-01-06 17:23:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-01-06 17:23:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2021-01-06 17:23:35,749 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 16 [2021-01-06 17:23:35,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:35,750 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2021-01-06 17:23:35,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:23:35,750 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2021-01-06 17:23:35,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:23:35,751 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:35,751 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:35,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:35,957 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 17:23:35,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:35,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1646243637, now seen corresponding path program 1 times [2021-01-06 17:23:35,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:35,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956925580] [2021-01-06 17:23:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:35,969 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:35,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [874782141] [2021-01-06 17:23:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:36,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:23:36,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:23:36,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956925580] [2021-01-06 17:23:36,116 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:36,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874782141] [2021-01-06 17:23:36,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:36,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:23:36,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543163886] [2021-01-06 17:23:36,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:23:36,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:36,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:23:36,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:36,118 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2021-01-06 17:23:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:36,181 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2021-01-06 17:23:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:23:36,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-01-06 17:23:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:36,182 INFO L225 Difference]: With dead ends: 84 [2021-01-06 17:23:36,182 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 17:23:36,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:23:36,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 17:23:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-01-06 17:23:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-06 17:23:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2021-01-06 17:23:36,190 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 17 [2021-01-06 17:23:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:36,190 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2021-01-06 17:23:36,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:23:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2021-01-06 17:23:36,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:23:36,191 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:36,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:23:36,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:36,399 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 17:23:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash -545991120, now seen corresponding path program 1 times [2021-01-06 17:23:36,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:36,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917263932] [2021-01-06 17:23:36,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:36,413 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:36,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681644778] [2021-01-06 17:23:36,414 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 17:23:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:36,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:23:36,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-01-06 17:23:36,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917263932] [2021-01-06 17:23:36,641 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:36,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681644778] [2021-01-06 17:23:36,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:23:36,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:23:36,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040810641] [2021-01-06 17:23:36,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:23:36,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:36,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:23:36,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:23:36,643 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 6 states. [2021-01-06 17:23:45,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:23:45,757 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2021-01-06 17:23:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:23:45,757 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2021-01-06 17:23:45,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:23:45,758 INFO L225 Difference]: With dead ends: 95 [2021-01-06 17:23:45,758 INFO L226 Difference]: Without dead ends: 87 [2021-01-06 17:23:45,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:23:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-01-06 17:23:45,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2021-01-06 17:23:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-01-06 17:23:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-01-06 17:23:45,766 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 18 [2021-01-06 17:23:45,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:23:45,767 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-01-06 17:23:45,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:23:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-01-06 17:23:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-06 17:23:45,768 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:23:45,768 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 17:23:45,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:45,969 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 17:23:45,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:23:45,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1399265450, now seen corresponding path program 1 times [2021-01-06 17:23:45,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:23:45,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532429177] [2021-01-06 17:23:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:23:45,983 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:23:45,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1133775859] [2021-01-06 17:23:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:23:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:23:46,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 31 conjunts are in the unsatisfiable core [2021-01-06 17:23:46,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:23:46,431 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-01-06 17:23:46,438 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:23:46,482 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 17:23:46,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532429177] [2021-01-06 17:23:46,482 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:23:46,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133775859] [2021-01-06 17:23:46,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:23:46,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:23:46,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334484506] [2021-01-06 17:23:46,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:23:46,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:23:46,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:23:46,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:23:46,485 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 10 states. [2021-01-06 17:24:02,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:02,812 INFO L93 Difference]: Finished difference Result 191 states and 210 transitions. [2021-01-06 17:24:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:24:02,813 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2021-01-06 17:24:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:02,814 INFO L225 Difference]: With dead ends: 191 [2021-01-06 17:24:02,814 INFO L226 Difference]: Without dead ends: 135 [2021-01-06 17:24:02,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:24:02,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-01-06 17:24:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 112. [2021-01-06 17:24:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-01-06 17:24:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-01-06 17:24:02,826 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 29 [2021-01-06 17:24:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:02,827 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-01-06 17:24:02,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:24:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-01-06 17:24:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-01-06 17:24:02,828 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:02,828 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:03,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:24:03,036 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 17:24:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash -427539036, now seen corresponding path program 1 times [2021-01-06 17:24:03,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:03,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206333570] [2021-01-06 17:24:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:03,058 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:03,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300886684] [2021-01-06 17:24:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:03,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:24:03,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:03,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206333570] [2021-01-06 17:24:03,225 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:03,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300886684] [2021-01-06 17:24:03,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:03,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:24:03,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843086391] [2021-01-06 17:24:03,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:24:03,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:03,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:24:03,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:24:03,233 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 7 states. [2021-01-06 17:24:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:03,302 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-01-06 17:24:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:24:03,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2021-01-06 17:24:03,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:03,304 INFO L225 Difference]: With dead ends: 130 [2021-01-06 17:24:03,305 INFO L226 Difference]: Without dead ends: 118 [2021-01-06 17:24:03,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:24:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-01-06 17:24:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2021-01-06 17:24:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2021-01-06 17:24:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2021-01-06 17:24:03,319 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 30 [2021-01-06 17:24:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:03,320 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2021-01-06 17:24:03,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:24:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2021-01-06 17:24:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:24:03,329 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:03,330 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 17:24:03,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:03,531 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:03,531 INFO L82 PathProgramCache]: Analyzing trace with hash -369177479, now seen corresponding path program 1 times [2021-01-06 17:24:03,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:03,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306709052] [2021-01-06 17:24:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:03,557 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:03,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1634214559] [2021-01-06 17:24:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 17:24:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:03,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2021-01-06 17:24:03,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:04,250 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 17:24:04,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306709052] [2021-01-06 17:24:04,251 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:04,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634214559] [2021-01-06 17:24:04,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:04,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:24:04,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509246739] [2021-01-06 17:24:04,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:24:04,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:04,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:24:04,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:04,254 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 10 states. [2021-01-06 17:24:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:17,004 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2021-01-06 17:24:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:24:17,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2021-01-06 17:24:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:17,006 INFO L225 Difference]: With dead ends: 134 [2021-01-06 17:24:17,006 INFO L226 Difference]: Without dead ends: 128 [2021-01-06 17:24:17,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:24:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-01-06 17:24:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2021-01-06 17:24:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-01-06 17:24:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2021-01-06 17:24:17,016 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 31 [2021-01-06 17:24:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:17,017 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2021-01-06 17:24:17,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:24:17,017 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2021-01-06 17:24:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-01-06 17:24:17,018 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:17,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:17,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:17,219 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:17,220 INFO L82 PathProgramCache]: Analyzing trace with hash -512605587, now seen corresponding path program 2 times [2021-01-06 17:24:17,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:17,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283572792] [2021-01-06 17:24:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:17,239 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:17,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813818648] [2021-01-06 17:24:17,239 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:17,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:24:17,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:24:17,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:24:17,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:17,865 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2021-01-06 17:24:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:17,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283572792] [2021-01-06 17:24:17,909 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:17,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813818648] [2021-01-06 17:24:17,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:17,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:24:17,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627624608] [2021-01-06 17:24:17,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:24:17,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:17,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:24:17,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:24:17,911 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand 12 states. [2021-01-06 17:24:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:31,332 INFO L93 Difference]: Finished difference Result 226 states and 250 transitions. [2021-01-06 17:24:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:24:31,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2021-01-06 17:24:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:31,335 INFO L225 Difference]: With dead ends: 226 [2021-01-06 17:24:31,335 INFO L226 Difference]: Without dead ends: 170 [2021-01-06 17:24:31,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:24:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-01-06 17:24:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 148. [2021-01-06 17:24:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-01-06 17:24:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 168 transitions. [2021-01-06 17:24:31,354 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 168 transitions. Word has length 32 [2021-01-06 17:24:31,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:31,354 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 168 transitions. [2021-01-06 17:24:31,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:24:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 168 transitions. [2021-01-06 17:24:31,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:24:31,356 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:31,356 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 17:24:31,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-06 17:24:31,570 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:31,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:31,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1702884924, now seen corresponding path program 1 times [2021-01-06 17:24:31,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:31,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354068591] [2021-01-06 17:24:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:31,589 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:31,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031248920] [2021-01-06 17:24:31,590 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:24:32,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 38 conjunts are in the unsatisfiable core [2021-01-06 17:24:32,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:32,995 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 17:24:32,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354068591] [2021-01-06 17:24:32,996 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:32,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031248920] [2021-01-06 17:24:32,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:32,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:24:32,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169976011] [2021-01-06 17:24:32,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:24:32,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:32,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:24:32,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:24:32,998 INFO L87 Difference]: Start difference. First operand 148 states and 168 transitions. Second operand 11 states. [2021-01-06 17:24:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:54,722 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2021-01-06 17:24:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-06 17:24:54,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2021-01-06 17:24:54,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:54,724 INFO L225 Difference]: With dead ends: 160 [2021-01-06 17:24:54,724 INFO L226 Difference]: Without dead ends: 141 [2021-01-06 17:24:54,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-01-06 17:24:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-01-06 17:24:54,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-01-06 17:24:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-01-06 17:24:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2021-01-06 17:24:54,737 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 33 [2021-01-06 17:24:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:54,737 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2021-01-06 17:24:54,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:24:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2021-01-06 17:24:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-06 17:24:54,738 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:54,738 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:54,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-01-06 17:24:54,943 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:54,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:54,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1289112941, now seen corresponding path program 2 times [2021-01-06 17:24:54,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:54,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930409267] [2021-01-06 17:24:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:54,953 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:54,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261860675] [2021-01-06 17:24:54,954 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:55,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:24:55,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:24:55,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:24:55,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:55,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930409267] [2021-01-06 17:24:55,134 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:55,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261860675] [2021-01-06 17:24:55,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:55,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:24:55,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101850560] [2021-01-06 17:24:55,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:24:55,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:55,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:24:55,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:24:55,136 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand 8 states. [2021-01-06 17:24:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:24:55,221 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2021-01-06 17:24:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:24:55,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2021-01-06 17:24:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:24:55,223 INFO L225 Difference]: With dead ends: 159 [2021-01-06 17:24:55,223 INFO L226 Difference]: Without dead ends: 147 [2021-01-06 17:24:55,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:24:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-01-06 17:24:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 139. [2021-01-06 17:24:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-01-06 17:24:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 154 transitions. [2021-01-06 17:24:55,234 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 154 transitions. Word has length 33 [2021-01-06 17:24:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:24:55,234 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 154 transitions. [2021-01-06 17:24:55,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:24:55,235 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 154 transitions. [2021-01-06 17:24:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-01-06 17:24:55,235 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:24:55,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:24:55,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-01-06 17:24:55,450 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:24:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:24:55,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1307426256, now seen corresponding path program 2 times [2021-01-06 17:24:55,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:24:55,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140545300] [2021-01-06 17:24:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:24:55,470 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:24:55,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326121267] [2021-01-06 17:24:55,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:24:58,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:24:58,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:24:58,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 41 conjunts are in the unsatisfiable core [2021-01-06 17:24:58,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:24:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:24:59,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140545300] [2021-01-06 17:24:59,034 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:24:59,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326121267] [2021-01-06 17:24:59,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:24:59,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:24:59,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673217053] [2021-01-06 17:24:59,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:24:59,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:24:59,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:24:59,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:24:59,036 INFO L87 Difference]: Start difference. First operand 139 states and 154 transitions. Second operand 12 states. [2021-01-06 17:25:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:25:16,165 INFO L93 Difference]: Finished difference Result 143 states and 156 transitions. [2021-01-06 17:25:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-01-06 17:25:16,166 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2021-01-06 17:25:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:25:16,167 INFO L225 Difference]: With dead ends: 143 [2021-01-06 17:25:16,167 INFO L226 Difference]: Without dead ends: 141 [2021-01-06 17:25:16,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2021-01-06 17:25:16,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-01-06 17:25:16,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-01-06 17:25:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2021-01-06 17:25:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2021-01-06 17:25:16,178 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 34 [2021-01-06 17:25:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:25:16,179 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2021-01-06 17:25:16,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:25:16,179 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2021-01-06 17:25:16,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 17:25:16,179 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:25:16,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:25:16,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:25:16,381 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:25:16,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:25:16,382 INFO L82 PathProgramCache]: Analyzing trace with hash 90029215, now seen corresponding path program 1 times [2021-01-06 17:25:16,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:25:16,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482100027] [2021-01-06 17:25:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:25:16,390 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:25:16,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606475319] [2021-01-06 17:25:16,391 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true