/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_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:04:40,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:04:40,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:04:40,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:04:40,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:04:40,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:04:40,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:04:40,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:04:40,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:04:40,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:04:40,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:04:40,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:04:40,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:04:40,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:04:40,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:04:40,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:04:40,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:04:40,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:04:40,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:04:40,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:04:40,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:04:40,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:04:40,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:04:40,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:04:40,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:04:40,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:04:40,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:04:40,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:04:40,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:04:40,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:04:40,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:04:40,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:04:40,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:04:40,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:04:40,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:04:40,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:04:40,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:04:40,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:04:40,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:04:40,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:04:40,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:04:40,626 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:04:40,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:04:40,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:04:40,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:04:40,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:04:40,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:04:40,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:04:40,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:04:40,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:04:40,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:04:40,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:04:40,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:04:40,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:04:40,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:04:40,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:04:40,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:04:40,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:04:40,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:04:40,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:04:40,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:04:40,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:04:40,632 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:04:41,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:04:41,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:04:41,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:04:41,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:04:41,060 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:04:41,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound10.c [2020-12-22 05:04:41,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df4c2df0/b1d227574524490c90728a8513dbee70/FLAGa28e12749 [2020-12-22 05:04:41,887 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:04:41,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound10.c [2020-12-22 05:04:41,896 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df4c2df0/b1d227574524490c90728a8513dbee70/FLAGa28e12749 [2020-12-22 05:04:42,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df4c2df0/b1d227574524490c90728a8513dbee70 [2020-12-22 05:04:42,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:04:42,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:04:42,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:04:42,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:04:42,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:04:42,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d882e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42, skipping insertion in model container [2020-12-22 05:04:42,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:04:42,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:04:42,408 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound10.c[525,538] [2020-12-22 05:04:42,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:04:42,457 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:04:42,474 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound10.c[525,538] [2020-12-22 05:04:42,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:04:42,553 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:04:42,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42 WrapperNode [2020-12-22 05:04:42,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:04:42,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:04:42,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:04:42,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:04:42,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:04:42,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:04:42,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:04:42,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:04:42,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... [2020-12-22 05:04:42,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:04:42,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:04:42,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:04:42,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:04:42,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:04:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:04:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:04:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:04:42,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:04:45,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:04:45,546 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-22 05:04:45,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:04:45 BoogieIcfgContainer [2020-12-22 05:04:45,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:04:45,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:04:45,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:04:45,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:04:45,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:04:42" (1/3) ... [2020-12-22 05:04:45,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6407ff43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:04:45, skipping insertion in model container [2020-12-22 05:04:45,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:42" (2/3) ... [2020-12-22 05:04:45,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6407ff43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:04:45, skipping insertion in model container [2020-12-22 05:04:45,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:04:45" (3/3) ... [2020-12-22 05:04:45,559 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound10.c [2020-12-22 05:04:45,571 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:04:45,577 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 05:04:45,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 05:04:45,625 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:04:45,626 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:04:45,626 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:04:45,626 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:04:45,626 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:04:45,626 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:04:45,627 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:04:45,627 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:04:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-22 05:04:45,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:04:45,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:45,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:45,654 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]=== [2020-12-22 05:04:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:45,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-22 05:04:45,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:45,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042746461] [2020-12-22 05:04:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:45,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042746461] [2020-12-22 05:04:45,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:45,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:04:45,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656623962] [2020-12-22 05:04:45,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:04:45,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:04:45,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:04:45,975 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-22 05:04:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:46,011 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-22 05:04:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:04:46,013 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 05:04:46,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:46,032 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:04:46,033 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 05:04:46,043 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 [2020-12-22 05:04:46,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 05:04:46,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-22 05:04:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 05:04:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-22 05:04:46,099 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-22 05:04:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:46,100 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-22 05:04:46,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:04:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-22 05:04:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:04:46,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:46,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:46,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:04:46,104 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]=== [2020-12-22 05:04:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:46,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-22 05:04:46,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:46,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648958686] [2020-12-22 05:04:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:46,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648958686] [2020-12-22 05:04:46,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:46,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:04:46,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59434599] [2020-12-22 05:04:46,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:04:46,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:46,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:04:46,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:04:46,476 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2020-12-22 05:05:03,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:03,487 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-12-22 05:05:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:05:03,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 05:05:03,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:03,490 INFO L225 Difference]: With dead ends: 103 [2020-12-22 05:05:03,490 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 05:05:03,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:05:03,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 05:05:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-12-22 05:05:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 05:05:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-12-22 05:05:03,504 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 11 [2020-12-22 05:05:03,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:03,504 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-12-22 05:05:03,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:05:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-12-22 05:05:03,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:05:03,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:03,506 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:05:03,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:05:03,506 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]=== [2020-12-22 05:05:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:03,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-22 05:05:03,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:03,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309456914] [2020-12-22 05:05:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:05:03,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309456914] [2020-12-22 05:05:03,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247863318] [2020-12-22 05:05:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:05:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:03,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 05:05:03,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:03,975 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:05:03,990 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:05:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:05:04,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 05:05:04,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 05:05:04,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211575447] [2020-12-22 05:05:04,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:05:04,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:04,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:05:04,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:05:04,037 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 9 states. [2020-12-22 05:05:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:26,469 INFO L93 Difference]: Finished difference Result 188 states and 214 transitions. [2020-12-22 05:05:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 05:05:26,470 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-22 05:05:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:26,472 INFO L225 Difference]: With dead ends: 188 [2020-12-22 05:05:26,472 INFO L226 Difference]: Without dead ends: 142 [2020-12-22 05:05:26,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:05:26,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-22 05:05:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 99. [2020-12-22 05:05:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:05:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-12-22 05:05:26,491 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 13 [2020-12-22 05:05:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:26,492 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-12-22 05:05:26,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:05:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-12-22 05:05:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:05:26,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:26,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:05:26,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 05:05:26,709 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]=== [2020-12-22 05:05:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:26,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-22 05:05:26,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:26,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788192989] [2020-12-22 05:05:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:26,742 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:05:26,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616934579] [2020-12-22 05:05:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:05:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:26,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:05:26,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:05:26,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788192989] [2020-12-22 05:05:26,926 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:05:26,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616934579] [2020-12-22 05:05:26,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:05:26,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:05:26,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137938455] [2020-12-22 05:05:26,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:05:26,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:26,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:05:26,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:05:26,928 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-12-22 05:05:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:31,985 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-12-22 05:05:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:05:31,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 05:05:31,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:31,988 INFO L225 Difference]: With dead ends: 116 [2020-12-22 05:05:31,988 INFO L226 Difference]: Without dead ends: 97 [2020-12-22 05:05:31,989 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 [2020-12-22 05:05:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-22 05:05:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-12-22 05:05:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 05:05:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2020-12-22 05:05:32,019 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 15 [2020-12-22 05:05:32,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:32,020 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2020-12-22 05:05:32,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:05:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2020-12-22 05:05:32,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:05:32,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:32,023 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:05:32,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:05:32,224 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]=== [2020-12-22 05:05:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:32,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-22 05:05:32,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:32,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560780903] [2020-12-22 05:05:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:32,251 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:05:32,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982999955] [2020-12-22 05:05:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:05:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:32,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:05:32,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 05:05:32,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560780903] [2020-12-22 05:05:32,519 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:05:32,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982999955] [2020-12-22 05:05:32,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:05:32,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:05:32,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202642929] [2020-12-22 05:05:32,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:05:32,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:32,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:05:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:05:32,523 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 6 states. [2020-12-22 05:05:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:39,317 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2020-12-22 05:05:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:05:39,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 05:05:39,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:39,319 INFO L225 Difference]: With dead ends: 124 [2020-12-22 05:05:39,319 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 05:05:39,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:05:39,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 05:05:39,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2020-12-22 05:05:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-22 05:05:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2020-12-22 05:05:39,346 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 17 [2020-12-22 05:05:39,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:39,346 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2020-12-22 05:05:39,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:05:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2020-12-22 05:05:39,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:05:39,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:39,352 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:05:39,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:05:39,555 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]=== [2020-12-22 05:05:39,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:39,556 INFO L82 PathProgramCache]: Analyzing trace with hash -957581047, now seen corresponding path program 1 times [2020-12-22 05:05:39,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:39,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575155238] [2020-12-22 05:05:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:39,570 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:05:39,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290293004] [2020-12-22 05:05:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:05:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:39,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:05:39,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:40,051 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:05:40,068 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:05:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:05:40,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575155238] [2020-12-22 05:05:40,102 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:05:40,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290293004] [2020-12-22 05:05:40,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:05:40,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:05:40,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527102127] [2020-12-22 05:05:40,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:05:40,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:05:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:05:40,105 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand 9 states. [2020-12-22 05:05:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:56,450 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2020-12-22 05:05:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:05:56,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-22 05:05:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:56,452 INFO L225 Difference]: With dead ends: 163 [2020-12-22 05:05:56,452 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 05:05:56,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:05:56,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 05:05:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 99. [2020-12-22 05:05:56,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:05:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2020-12-22 05:05:56,468 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 27 [2020-12-22 05:05:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:56,468 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2020-12-22 05:05:56,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:05:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2020-12-22 05:05:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:05:56,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:56,470 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] [2020-12-22 05:05:56,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:05:56,675 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]=== [2020-12-22 05:05:56,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:56,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2020-12-22 05:05:56,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:56,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752304575] [2020-12-22 05:05:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:56,710 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:05:56,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255669061] [2020-12-22 05:05:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:05:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:57,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 05:05:57,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:05:57,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752304575] [2020-12-22 05:05:57,431 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:05:57,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255669061] [2020-12-22 05:05:57,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:05:57,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:05:57,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668132998] [2020-12-22 05:05:57,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:05:57,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:57,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:05:57,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:05:57,433 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand 10 states. [2020-12-22 05:06:06,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:06,818 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-12-22 05:06:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:06:06,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-22 05:06:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:06,822 INFO L225 Difference]: With dead ends: 121 [2020-12-22 05:06:06,822 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 05:06:06,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:06:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 05:06:06,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 103. [2020-12-22 05:06:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-22 05:06:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2020-12-22 05:06:06,851 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 29 [2020-12-22 05:06:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:06,852 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2020-12-22 05:06:06,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:06:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2020-12-22 05:06:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:06:06,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:06,855 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:07,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:06:07,061 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]=== [2020-12-22 05:06:07,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:07,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1667347652, now seen corresponding path program 2 times [2020-12-22 05:06:07,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:07,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366051395] [2020-12-22 05:06:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:07,090 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:06:07,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299025036] [2020-12-22 05:06:07,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:06:07,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:06:07,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:06:07,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:06:07,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:06:07,594 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:06:07,599 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:06:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:06:07,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366051395] [2020-12-22 05:06:07,636 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:06:07,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299025036] [2020-12-22 05:06:07,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:06:07,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:06:07,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758674408] [2020-12-22 05:06:07,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:06:07,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:07,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:06:07,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:06:07,638 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand 11 states. [2020-12-22 05:06:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:28,628 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-12-22 05:06:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:06:28,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-12-22 05:06:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:28,646 INFO L225 Difference]: With dead ends: 180 [2020-12-22 05:06:28,646 INFO L226 Difference]: Without dead ends: 118 [2020-12-22 05:06:28,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:06:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-22 05:06:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 97. [2020-12-22 05:06:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-22 05:06:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2020-12-22 05:06:28,658 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 29 [2020-12-22 05:06:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:28,658 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2020-12-22 05:06:28,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:06:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2020-12-22 05:06:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:06:28,659 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:28,660 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] [2020-12-22 05:06:28,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:06:28,866 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]=== [2020-12-22 05:06:28,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:28,866 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2020-12-22 05:06:28,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:28,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797537180] [2020-12-22 05:06:28,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:28,879 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:06:28,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115076860] [2020-12-22 05:06:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:06:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:29,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:06:29,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:06:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:06:29,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797537180] [2020-12-22 05:06:29,630 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:06:29,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115076860] [2020-12-22 05:06:29,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:06:29,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:06:29,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484727110] [2020-12-22 05:06:29,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:06:29,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:29,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:06:29,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:06:29,632 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand 10 states. [2020-12-22 05:06:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:37,433 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2020-12-22 05:06:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:06:37,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-22 05:06:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:37,435 INFO L225 Difference]: With dead ends: 109 [2020-12-22 05:06:37,435 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 05:06:37,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:06:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 05:06:37,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-12-22 05:06:37,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 05:06:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-12-22 05:06:37,445 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 31 [2020-12-22 05:06:37,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:37,446 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-12-22 05:06:37,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:06:37,446 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-12-22 05:06:37,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:06:37,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:37,447 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:37,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:06:37,651 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]=== [2020-12-22 05:06:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:37,652 INFO L82 PathProgramCache]: Analyzing trace with hash 298448647, now seen corresponding path program 2 times [2020-12-22 05:06:37,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:37,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742934046] [2020-12-22 05:06:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:37,672 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:06:37,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1334791224] [2020-12-22 05:06:37,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 05:06:40,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:06:40,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:06:40,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 05:06:40,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:06:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:06:41,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742934046] [2020-12-22 05:06:41,113 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:06:41,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334791224] [2020-12-22 05:06:41,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:06:41,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:06:41,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975187072] [2020-12-22 05:06:41,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:06:41,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:41,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:06:41,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:06:41,116 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 12 states. [2020-12-22 05:06:53,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:53,839 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2020-12-22 05:06:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:06:53,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-12-22 05:06:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:53,843 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:06:53,844 INFO L226 Difference]: Without dead ends: 95 [2020-12-22 05:06:53,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:06:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-22 05:06:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2020-12-22 05:06:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-12-22 05:06:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-12-22 05:06:53,854 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 31 [2020-12-22 05:06:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:53,854 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-12-22 05:06:53,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:06:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-12-22 05:06:53,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:06:53,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:53,856 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] [2020-12-22 05:06:54,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:06:54,063 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]=== [2020-12-22 05:06:54,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:54,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1120732658, now seen corresponding path program 1 times [2020-12-22 05:06:54,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:54,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638717296] [2020-12-22 05:06:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:54,073 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:06:54,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526262283] [2020-12-22 05:06:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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