/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:47:32,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:47:32,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:47:32,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:47:32,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:47:32,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:47:32,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:47:32,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:47:32,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:47:32,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:47:32,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:47:32,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-23 18:47:32,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:47:32,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:47:32,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:47:32,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:47:32,848 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:47:32,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:47:32,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:47:32,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:47:32,853 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:47:32,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:47:32,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:47:32,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:47:32,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:47:32,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:47:32,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:47:32,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:47:32,856 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:47:32,856 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:47:32,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:47:32,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:47:32,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:47:32,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:47:32,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:47:32,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:47:32,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:47:32,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:47:32,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:47:32,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:47:32,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:47:32,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:47:32,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:47:32,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:47:32,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:47:32,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:47:33,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:47:33,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:47:33,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:47:33,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:47:33,299 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:47:33,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-10-23 18:47:33,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6284a99/b181bbb6276849b2b30170ba832aaa67/FLAGaf08fd7f7 [2020-10-23 18:47:33,946 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:47:33,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-10-23 18:47:33,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6284a99/b181bbb6276849b2b30170ba832aaa67/FLAGaf08fd7f7 [2020-10-23 18:47:34,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e6284a99/b181bbb6276849b2b30170ba832aaa67 [2020-10-23 18:47:34,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:47:34,306 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:47:34,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:47:34,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:47:34,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:47:34,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1a6dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34, skipping insertion in model container [2020-10-23 18:47:34,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:47:34,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:47:34,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:47:34,514 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:47:34,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:47:34,552 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:47:34,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34 WrapperNode [2020-10-23 18:47:34,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:47:34,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:47:34,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:47:34,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:47:34,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (1/1) ... [2020-10-23 18:47:34,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:47:34,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:47:34,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:47:34,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:47:34,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (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 [2020-10-23 18:47:34,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:47:34,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:47:34,676 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:47:34,676 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:47:34,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:47:34,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:47:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:47:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:47:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:47:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:47:34,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:47:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:47:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:47:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:47:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:47:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:47:34,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:47:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:47:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:47:34,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:47:35,198 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:47:35,198 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:47:35,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:47:35 BoogieIcfgContainer [2020-10-23 18:47:35,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:47:35,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:47:35,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:47:35,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:47:35,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:47:34" (1/3) ... [2020-10-23 18:47:35,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4103d868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:47:35, skipping insertion in model container [2020-10-23 18:47:35,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:47:34" (2/3) ... [2020-10-23 18:47:35,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4103d868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:47:35, skipping insertion in model container [2020-10-23 18:47:35,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:47:35" (3/3) ... [2020-10-23 18:47:35,210 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-10-23 18:47:35,224 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:47:35,229 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:47:35,242 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:47:35,271 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:47:35,271 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:47:35,271 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:47:35,271 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:47:35,271 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:47:35,272 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:47:35,272 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:47:35,272 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:47:35,290 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-23 18:47:35,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-23 18:47:35,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:47:35,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:47:35,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:47:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:47:35,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1253122788, now seen corresponding path program 1 times [2020-10-23 18:47:35,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:47:35,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818488887] [2020-10-23 18:47:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:47:35,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:47:35,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155684312] [2020-10-23 18:47:35,438 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 [2020-10-23 18:47:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:35,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:47:35,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:47:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:47:35,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818488887] [2020-10-23 18:47:35,690 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:47:35,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155684312] [2020-10-23 18:47:35,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:47:35,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:47:35,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108785791] [2020-10-23 18:47:35,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:47:35,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:47:35,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:47:35,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:47:35,714 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-10-23 18:47:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:47:35,793 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2020-10-23 18:47:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:47:35,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-23 18:47:35,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:47:35,804 INFO L225 Difference]: With dead ends: 50 [2020-10-23 18:47:35,804 INFO L226 Difference]: Without dead ends: 26 [2020-10-23 18:47:35,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:47:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-23 18:47:35,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-23 18:47:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-23 18:47:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-23 18:47:35,846 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 12 [2020-10-23 18:47:35,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:47:35,846 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-23 18:47:35,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:47:35,847 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-23 18:47:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 18:47:35,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:47:35,848 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:47:36,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-10-23 18:47:36,062 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:47:36,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:47:36,065 INFO L82 PathProgramCache]: Analyzing trace with hash 665848540, now seen corresponding path program 1 times [2020-10-23 18:47:36,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:47:36,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560698772] [2020-10-23 18:47:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:47:36,095 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-23 18:47:36,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287283208] [2020-10-23 18:47:36,096 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 [2020-10-23 18:47:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:47:36,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-23 18:47:36,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:47:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:47:36,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560698772] [2020-10-23 18:47:36,307 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-10-23 18:47:36,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287283208] [2020-10-23 18:47:36,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:47:36,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-23 18:47:36,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357614661] [2020-10-23 18:47:36,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 18:47:36,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:47:36,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 18:47:36,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:47:36,311 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-23 18:47:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:47:36,429 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-10-23 18:47:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:47:36,430 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-23 18:47:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:47:36,430 INFO L225 Difference]: With dead ends: 24 [2020-10-23 18:47:36,431 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:47:36,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:47:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:47:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:47:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:47:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:47:36,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-23 18:47:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:47:36,433 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:47:36,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 18:47:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:47:36,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:47:36,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:47:36,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:47:36,721 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2020-10-23 18:47:36,721 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 9) the Hoare annotation is: true [2020-10-23 18:47:36,722 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2020-10-23 18:47:36,722 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-10-23 18:47:36,722 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:47:36,722 INFO L277 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:47:36,722 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:47:36,722 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:47:36,723 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:47:36,723 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:47:36,728 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:47:36,728 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 12 14) no Hoare annotation was computed. [2020-10-23 18:47:36,728 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-10-23 18:47:36,728 INFO L274 CegarLoopResult]: For program point L13-2(lines 12 14) no Hoare annotation was computed. [2020-10-23 18:47:36,728 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2020-10-23 18:47:36,729 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (= (+ (* main_~x~0 main_~z~0) 1) (+ main_~x~0 main_~y~0)) [2020-10-23 18:47:36,729 INFO L274 CegarLoopResult]: For program point L33-1(lines 32 42) no Hoare annotation was computed. [2020-10-23 18:47:36,729 INFO L270 CegarLoopResult]: At program point L32-2(lines 32 42) the Hoare annotation is: (= (+ (* main_~x~0 main_~z~0) 1) (+ main_~x~0 main_~y~0)) [2020-10-23 18:47:36,729 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 22 48) the Hoare annotation is: true [2020-10-23 18:47:36,729 INFO L274 CegarLoopResult]: For program point L32-3(lines 32 42) no Hoare annotation was computed. [2020-10-23 18:47:36,729 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 22 48) no Hoare annotation was computed. [2020-10-23 18:47:36,730 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (exists ((v_main_~x~0_12 Int) (main_~z~0 Int)) (let ((.cse0 (* v_main_~x~0_12 main_~z~0))) (and (= (+ .cse0 1) (+ main_~y~0 v_main_~x~0_12)) (= (+ main_~x~0 v_main_~x~0_12) .cse0)))) [2020-10-23 18:47:36,730 INFO L274 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-10-23 18:47:36,731 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 22 48) no Hoare annotation was computed. [2020-10-23 18:47:36,731 INFO L270 CegarLoopResult]: At program point L17(lines 17 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-23 18:47:36,731 INFO L274 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-10-23 18:47:36,731 INFO L274 CegarLoopResult]: For program point L16-1(lines 15 21) no Hoare annotation was computed. [2020-10-23 18:47:36,731 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2020-10-23 18:47:36,731 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2020-10-23 18:47:36,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:47:36 BoogieIcfgContainer [2020-10-23 18:47:36,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:47:36,752 INFO L168 Benchmark]: Toolchain (without parser) took 2450.49 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 69.2 MB in the end (delta: 57.5 MB). Peak memory consumption was 58.3 MB. Max. memory is 8.0 GB. [2020-10-23 18:47:36,755 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.5 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:47:36,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.88 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:47:36,759 INFO L168 Benchmark]: Boogie Preprocessor took 38.31 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:47:36,760 INFO L168 Benchmark]: RCFGBuilder took 606.87 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 133.2 MB in the end (delta: -18.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:47:36,763 INFO L168 Benchmark]: TraceAbstraction took 1547.24 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 69.2 MB in the end (delta: 63.4 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:47:36,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.5 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.88 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.31 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 606.87 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 133.2 MB in the end (delta: -18.8 MB). Peak memory consumption was 16.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1547.24 ms. Allocated memory is still 151.0 MB. Free memory was 132.7 MB in the beginning and 69.2 MB in the end (delta: 63.4 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: x * z + 1 == x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 14 SDslu, 109 SDs, 0 SdLazy, 48 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 19 PreInvPairs, 24 NumberOfFragments, 46 HoareAnnotationTreeSize, 19 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 1 QuantifiedInterpolants, 1431 SizeOfPredicates, 6 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...