/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:45:06,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:45:06,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:45:06,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:45:06,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:45:06,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:45:06,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:45:06,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:45:06,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:45:06,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:45:06,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:45:06,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:45:06,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:45:06,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:45:06,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:45:06,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:45:06,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:45:06,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:45:06,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:45:06,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:45:06,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:45:06,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:45:06,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:45:06,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:45:06,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:45:06,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:45:06,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:45:06,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:45:06,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:45:06,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:45:06,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:45:06,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:45:06,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:45:06,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:45:06,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:45:06,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:45:06,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:45:06,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:45:06,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:45:06,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:45:06,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:45:06,457 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:45:06,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:45:06,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:45:06,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:45:06,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:45:06,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:45:06,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:45:06,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:45:06,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:45:06,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:45:06,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:45:06,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:45:06,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:45:06,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:45:06,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:45:06,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:45:06,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:45:06,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:45:06,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:45:06,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:45:06,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:45:06,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:45:06,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:45:06,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:45:06,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:45:06,855 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:45:06,859 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:45:06,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c [2020-12-22 05:45:06,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3401f9bd0/97ce6f5efc3d4b699c8b06b8cfc832f6/FLAGb1c10d635 [2020-12-22 05:45:07,503 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:45:07,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c [2020-12-22 05:45:07,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3401f9bd0/97ce6f5efc3d4b699c8b06b8cfc832f6/FLAGb1c10d635 [2020-12-22 05:45:07,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3401f9bd0/97ce6f5efc3d4b699c8b06b8cfc832f6 [2020-12-22 05:45:07,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:45:07,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:45:07,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:45:07,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:45:07,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:45:07,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:45:07" (1/1) ... [2020-12-22 05:45:07,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3984b853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:07, skipping insertion in model container [2020-12-22 05:45:07,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:45:07" (1/1) ... [2020-12-22 05:45:07,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:45:07,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:45:08,165 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/ps5-ll_unwindbound5.c[458,471] [2020-12-22 05:45:08,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:45:08,218 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:45:08,236 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/ps5-ll_unwindbound5.c[458,471] [2020-12-22 05:45:08,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:45:08,290 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:45:08,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08 WrapperNode [2020-12-22 05:45:08,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:45:08,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:45:08,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:45:08,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:45:08,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:45:08,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:45:08,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:45:08,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:45:08,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (1/1) ... [2020-12-22 05:45:08,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:45:08,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:45:08,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:45:08,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:45:08,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (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 05:45:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:45:08,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:45:08,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:45:08,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:45:08,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:45:08,807 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 05:45:08,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:45:08 BoogieIcfgContainer [2020-12-22 05:45:08,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:45:08,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:45:08,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:45:08,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:45:08,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:45:07" (1/3) ... [2020-12-22 05:45:08,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322fce83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:45:08, skipping insertion in model container [2020-12-22 05:45:08,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:45:08" (2/3) ... [2020-12-22 05:45:08,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322fce83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:45:08, skipping insertion in model container [2020-12-22 05:45:08,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:45:08" (3/3) ... [2020-12-22 05:45:08,819 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound5.c [2020-12-22 05:45:08,826 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:45:08,831 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 05:45:08,880 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 05:45:08,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:45:08,932 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:45:08,935 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:45:08,935 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:45:08,935 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:45:08,935 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:45:08,935 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:45:08,935 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:45:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-22 05:45:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:45:08,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:45:08,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:45:08,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:45:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:45:08,998 INFO L82 PathProgramCache]: Analyzing trace with hash 120120651, now seen corresponding path program 1 times [2020-12-22 05:45:09,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:45:09,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650174240] [2020-12-22 05:45:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:45:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:45:09,269 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 05:45:09,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650174240] [2020-12-22 05:45:09,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:45:09,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:45:09,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744965316] [2020-12-22 05:45:09,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:45:09,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:45:09,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:45:09,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:45:09,303 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-12-22 05:45:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:45:09,325 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-12-22 05:45:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:45:09,326 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-22 05:45:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:45:09,336 INFO L225 Difference]: With dead ends: 41 [2020-12-22 05:45:09,336 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 05:45:09,339 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 05:45:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 05:45:09,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-22 05:45:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 05:45:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-22 05:45:09,374 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-12-22 05:45:09,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:45:09,375 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-22 05:45:09,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:45:09,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-22 05:45:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 05:45:09,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:45:09,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:45:09,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:45:09,376 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:45:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:45:09,377 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-22 05:45:09,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:45:09,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796844429] [2020-12-22 05:45:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:45:09,399 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:45:09,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095060250] [2020-12-22 05:45:09,400 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 05:45:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:45:09,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:45:09,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:45:09,558 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 05:45:09,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796844429] [2020-12-22 05:45:09,558 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:45:09,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095060250] [2020-12-22 05:45:09,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:45:09,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:45:09,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143256089] [2020-12-22 05:45:09,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:45:09,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:45:09,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:45:09,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:45:09,563 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-12-22 05:45:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:45:09,671 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-22 05:45:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:45:09,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-22 05:45:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:45:09,672 INFO L225 Difference]: With dead ends: 36 [2020-12-22 05:45:09,673 INFO L226 Difference]: Without dead ends: 25 [2020-12-22 05:45:09,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:45:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-22 05:45:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-22 05:45:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:45:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-22 05:45:09,680 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2020-12-22 05:45:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:45:09,681 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-22 05:45:09,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:45:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-22 05:45:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:45:09,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:45:09,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:45:09,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:45:09,897 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:45:09,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:45:09,899 INFO L82 PathProgramCache]: Analyzing trace with hash -938089448, now seen corresponding path program 1 times [2020-12-22 05:45:09,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:45:09,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051142540] [2020-12-22 05:45:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:45:09,916 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:45:09,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895684983] [2020-12-22 05:45:09,916 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 05:45:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:45:10,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:45:10,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:45:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:45:10,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051142540] [2020-12-22 05:45:10,117 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:45:10,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895684983] [2020-12-22 05:45:10,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:45:10,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:45:10,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284664365] [2020-12-22 05:45:10,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:45:10,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:45:10,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:45:10,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:45:10,120 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-12-22 05:45:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:45:10,272 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-12-22 05:45:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:45:10,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 05:45:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:45:10,274 INFO L225 Difference]: With dead ends: 39 [2020-12-22 05:45:10,274 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 05:45:10,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:45:10,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 05:45:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-12-22 05:45:10,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:45:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-12-22 05:45:10,284 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2020-12-22 05:45:10,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:45:10,284 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-12-22 05:45:10,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:45:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-22 05:45:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:45:10,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:45:10,285 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:45:10,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:45:10,489 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:45:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:45:10,491 INFO L82 PathProgramCache]: Analyzing trace with hash 687671895, now seen corresponding path program 1 times [2020-12-22 05:45:10,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:45:10,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046490173] [2020-12-22 05:45:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:45:10,520 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:45:10,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953501406] [2020-12-22 05:45:10,524 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 05:45:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:45:10,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:45:10,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:45:10,628 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 05:45:10,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046490173] [2020-12-22 05:45:10,628 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:45:10,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953501406] [2020-12-22 05:45:10,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:45:10,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:45:10,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774869509] [2020-12-22 05:45:10,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:45:10,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:45:10,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:45:10,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:45:10,631 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-12-22 05:45:10,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:45:10,662 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-22 05:45:10,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:45:10,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 05:45:10,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:45:10,664 INFO L225 Difference]: With dead ends: 34 [2020-12-22 05:45:10,664 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:45:10,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:45:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:45:10,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-22 05:45:10,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 05:45:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-22 05:45:10,672 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2020-12-22 05:45:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:45:10,672 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-22 05:45:10,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:45:10,672 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-22 05:45:10,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:45:10,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:45:10,673 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:45:10,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:45:10,888 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:45:10,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:45:10,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1290921348, now seen corresponding path program 2 times [2020-12-22 05:45:10,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:45:10,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919851664] [2020-12-22 05:45:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:45:10,932 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:45:10,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237153949] [2020-12-22 05:45:10,937 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 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 05:45:11,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:45:11,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:45:11,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:45:11,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:45:11,222 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 05:45:11,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919851664] [2020-12-22 05:45:11,223 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:45:11,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237153949] [2020-12-22 05:45:11,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:45:11,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:45:11,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566983255] [2020-12-22 05:45:11,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:45:11,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:45:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:45:11,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:45:11,225 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2020-12-22 05:45:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:45:11,372 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-12-22 05:45:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:45:11,373 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-12-22 05:45:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:45:11,374 INFO L225 Difference]: With dead ends: 49 [2020-12-22 05:45:11,374 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 05:45:11,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:45:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 05:45:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2020-12-22 05:45:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 05:45:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-12-22 05:45:11,382 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2020-12-22 05:45:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:45:11,383 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-12-22 05:45:11,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:45:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-12-22 05:45:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:45:11,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:45:11,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:45:11,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:45:11,590 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:45:11,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:45:11,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1329593552, now seen corresponding path program 1 times [2020-12-22 05:45:11,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:45:11,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521031949] [2020-12-22 05:45:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:45:11,620 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:45:11,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287932249] [2020-12-22 05:45:11,620 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 05:45:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:45:11,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 05:45:11,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:45:11,777 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:45:11,792 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 05:45:11,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521031949] [2020-12-22 05:45:11,793 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:45:11,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287932249] [2020-12-22 05:45:11,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:45:11,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:45:11,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719267596] [2020-12-22 05:45:11,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:45:11,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:45:11,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:45:11,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:45:11,796 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-12-22 05:45:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:45:12,016 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-12-22 05:45:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:45:12,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-22 05:45:12,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:45:12,017 INFO L225 Difference]: With dead ends: 38 [2020-12-22 05:45:12,017 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 05:45:12,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:45:12,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 05:45:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 05:45:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 05:45:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-12-22 05:45:12,025 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 17 [2020-12-22 05:45:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:45:12,026 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-12-22 05:45:12,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:45:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-12-22 05:45:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:45:12,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:45:12,027 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:45:12,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:45:12,243 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:45:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:45:12,244 INFO L82 PathProgramCache]: Analyzing trace with hash 658932075, now seen corresponding path program 2 times [2020-12-22 05:45:12,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:45:12,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290507697] [2020-12-22 05:45:12,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:45:12,257 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:45:12,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615076166] [2020-12-22 05:45:12,257 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 05:45:12,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:45:12,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:45:12,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:45:12,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:45:12,398 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 05:45:12,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290507697] [2020-12-22 05:45:12,398 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:45:12,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615076166] [2020-12-22 05:45:12,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:45:12,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:45:12,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326680963] [2020-12-22 05:45:12,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:45:12,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:45:12,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:45:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:45:12,401 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-12-22 05:45:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:45:12,447 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-12-22 05:45:12,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:45:12,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-12-22 05:45:12,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:45:12,449 INFO L225 Difference]: With dead ends: 38 [2020-12-22 05:45:12,449 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 05:45:12,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:45:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 05:45:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 05:45:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 05:45:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-12-22 05:45:12,456 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 19 [2020-12-22 05:45:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:45:12,456 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-12-22 05:45:12,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:45:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-12-22 05:45:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:45:12,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:45:12,458 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 05:45:12,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:45:12,672 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:45:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:45:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 399986928, now seen corresponding path program 3 times [2020-12-22 05:45:12,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:45:12,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870385870] [2020-12-22 05:45:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:45:12,685 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:45:12,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050695504] [2020-12-22 05:45:12,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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