/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 0.1.25-86f66a4 [2020-07-07 11:34:31,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:34:31,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:34:31,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:34:31,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:34:31,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:34:31,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:34:31,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:34:31,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:34:31,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:34:31,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:34:31,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:34:31,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:34:31,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:34:31,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:34:31,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:34:31,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:34:31,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:34:31,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:34:31,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:34:31,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:34:31,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:34:31,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:34:31,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:34:31,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:34:31,852 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 [2020-07-07 11:34:31,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:34:31,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:34:31,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:34:31,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:34:31,867 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:34:31,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:34:31,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:34:31,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:34:31,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:34:31,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:34:31,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:34:31,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:34:31,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:34:31,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:34:31,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:34:31,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:34:31,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:34:31,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:34:31,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:34:31,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:34:31,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:34:31,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:34:31,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:34:31,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:34:31,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:34:31,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:34:31,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:34:31,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:34:31,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:34:31,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:34:32,152 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:34:32,167 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:34:32,171 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:34:32,172 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:34:32,173 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:34:32,174 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-07 11:34:32,238 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244da0eca/2bde2186ff274521980e617be67d705d/FLAG158bc27fd [2020-07-07 11:34:32,679 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:34:32,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1.c [2020-07-07 11:34:32,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244da0eca/2bde2186ff274521980e617be67d705d/FLAG158bc27fd [2020-07-07 11:34:33,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244da0eca/2bde2186ff274521980e617be67d705d [2020-07-07 11:34:33,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:34:33,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:34:33,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:34:33,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:34:33,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:34:33,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c54dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33, skipping insertion in model container [2020-07-07 11:34:33,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:34:33,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:34:33,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:34:33,338 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:34:33,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:34:33,365 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:34:33,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33 WrapperNode [2020-07-07 11:34:33,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:34:33,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:34:33,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:34:33,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:34:33,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (1/1) ... [2020-07-07 11:34:33,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:34:33,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:34:33,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:34:33,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:34:33,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (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 [2020-07-07 11:34:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:34:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:34:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:34:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:34:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:34:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:34:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:34:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:34:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:34:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:34:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:34:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:34:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:34:33,737 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:34:33,737 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:34:33,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:34:33 BoogieIcfgContainer [2020-07-07 11:34:33,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:34:33,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:34:33,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:34:33,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:34:33,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:34:33" (1/3) ... [2020-07-07 11:34:33,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5146af4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:34:33, skipping insertion in model container [2020-07-07 11:34:33,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:33" (2/3) ... [2020-07-07 11:34:33,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5146af4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:34:33, skipping insertion in model container [2020-07-07 11:34:33,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:34:33" (3/3) ... [2020-07-07 11:34:33,749 INFO L109 eAbstractionObserver]: Analyzing ICFG geo1.c [2020-07-07 11:34:33,759 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:34:33,766 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:34:33,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:34:33,800 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:34:33,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:34:33,801 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:34:33,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:34:33,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:34:33,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:34:33,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:34:33,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:34:33,820 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-07 11:34:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:34:33,826 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:33,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:33,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1923958992, now seen corresponding path program 1 times [2020-07-07 11:34:33,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:33,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095846803] [2020-07-07 11:34:33,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:33,921 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:33,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855287505] [2020-07-07 11:34:33,922 INFO L94 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 [2020-07-07 11:34:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:33,995 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-07 11:34:34,005 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:34,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095846803] [2020-07-07 11:34:34,125 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:34,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855287505] [2020-07-07 11:34:34,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:34:34,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:34:34,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798427410] [2020-07-07 11:34:34,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:34:34,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:34,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:34:34,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:34:34,143 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2020-07-07 11:34:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:34,238 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2020-07-07 11:34:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:34:34,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-07 11:34:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:34,248 INFO L225 Difference]: With dead ends: 45 [2020-07-07 11:34:34,248 INFO L226 Difference]: Without dead ends: 24 [2020-07-07 11:34:34,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:34:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-07 11:34:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-07 11:34:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 11:34:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-07 11:34:34,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-07 11:34:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:34,290 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-07 11:34:34,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:34:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-07 11:34:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:34:34,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:34,292 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:34,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-07 11:34:34,506 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:34,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:34,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1187633082, now seen corresponding path program 1 times [2020-07-07 11:34:34,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:34,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439589971] [2020-07-07 11:34:34,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:34,516 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:34,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513756377] [2020-07-07 11:34:34,517 INFO L94 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 [2020-07-07 11:34:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:34,551 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-07 11:34:34,553 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:34,726 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:34,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439589971] [2020-07-07 11:34:34,786 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:34,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513756377] [2020-07-07 11:34:34,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:34,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-07 11:34:34,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712421810] [2020-07-07 11:34:34,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:34:34,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:34,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:34:34,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:34:34,790 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2020-07-07 11:34:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:37,080 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-07 11:34:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:34:37,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-07-07 11:34:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:37,084 INFO L225 Difference]: With dead ends: 28 [2020-07-07 11:34:37,084 INFO L226 Difference]: Without dead ends: 20 [2020-07-07 11:34:37,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:34:37,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-07 11:34:37,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-07 11:34:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-07 11:34:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-07-07 11:34:37,091 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2020-07-07 11:34:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:37,092 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-07-07 11:34:37,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:34:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-07 11:34:37,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:34:37,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:37,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:37,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:37,307 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:37,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1235596592, now seen corresponding path program 1 times [2020-07-07 11:34:37,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:37,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039705788] [2020-07-07 11:34:37,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:37,319 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:37,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481110651] [2020-07-07 11:34:37,320 INFO L94 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 [2020-07-07 11:34:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:37,356 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-07 11:34:37,358 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:37,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039705788] [2020-07-07 11:34:37,430 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:37,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481110651] [2020-07-07 11:34:37,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:37,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-07 11:34:37,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662734753] [2020-07-07 11:34:37,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:34:37,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:37,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:34:37,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:34:37,433 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 6 states. [2020-07-07 11:34:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:37,516 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-07-07 11:34:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:34:37,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-07 11:34:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:37,518 INFO L225 Difference]: With dead ends: 30 [2020-07-07 11:34:37,518 INFO L226 Difference]: Without dead ends: 28 [2020-07-07 11:34:37,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:34:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-07 11:34:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-07 11:34:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 11:34:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-07 11:34:37,527 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2020-07-07 11:34:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:37,527 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-07 11:34:37,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:34:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-07 11:34:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:34:37,528 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:37,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:37,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:37,744 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:37,745 INFO L82 PathProgramCache]: Analyzing trace with hash -677841104, now seen corresponding path program 2 times [2020-07-07 11:34:37,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:37,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465496935] [2020-07-07 11:34:37,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:37,753 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:37,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [280333140] [2020-07-07 11:34:37,754 INFO L92 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 [2020-07-07 11:34:37,804 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:34:37,804 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:37,805 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-07 11:34:37,807 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:38,032 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:34:40,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465496935] [2020-07-07 11:34:40,144 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:40,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280333140] [2020-07-07 11:34:40,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:40,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-07 11:34:40,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243158706] [2020-07-07 11:34:40,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:34:40,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:40,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:34:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:34:40,147 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-07-07 11:34:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:43,536 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-07-07 11:34:43,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:34:43,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-07 11:34:43,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:43,538 INFO L225 Difference]: With dead ends: 37 [2020-07-07 11:34:43,538 INFO L226 Difference]: Without dead ends: 35 [2020-07-07 11:34:43,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:34:43,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-07 11:34:43,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-07-07 11:34:43,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-07 11:34:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-07-07 11:34:43,549 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 24 [2020-07-07 11:34:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:43,549 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-07-07 11:34:43,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:34:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-07-07 11:34:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 11:34:43,550 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:43,551 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:43,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:43,754 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:43,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:43,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1339520304, now seen corresponding path program 3 times [2020-07-07 11:34:43,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:43,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239198453] [2020-07-07 11:34:43,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:43,762 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:43,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457863492] [2020-07-07 11:34:43,762 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-07-07 11:34:43,787 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-07 11:34:43,787 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:43,788 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-07 11:34:43,790 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:45,890 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-07 11:34:48,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239198453] [2020-07-07 11:34:48,004 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:48,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457863492] [2020-07-07 11:34:48,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:48,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-07 11:34:48,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335454895] [2020-07-07 11:34:48,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:34:48,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:48,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:34:48,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=41, Unknown=1, NotChecked=0, Total=56 [2020-07-07 11:34:48,006 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 8 states. [2020-07-07 11:34:52,151 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 19 [2020-07-07 11:34:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:58,349 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-07 11:34:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:34:58,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-07-07 11:34:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:58,351 INFO L225 Difference]: With dead ends: 34 [2020-07-07 11:34:58,351 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:34:58,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=24, Invalid=64, Unknown=2, NotChecked=0, Total=90 [2020-07-07 11:34:58,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:34:58,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:34:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:34:58,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:34:58,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-07 11:34:58,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:58,353 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:34:58,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:34:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:34:58,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:34:58,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:58,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:34:58,613 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:34:58,613 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:34:58,613 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:34:58,613 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:34:58,614 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:34:58,614 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:34:58,614 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 10 12) no Hoare annotation was computed. [2020-07-07 11:34:58,614 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-07-07 11:34:58,614 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-07-07 11:34:58,614 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-07-07 11:34:58,614 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (exists ((v_main_~x~0_15 Int)) (let ((.cse0 (* main_~z~0 v_main_~x~0_15))) (and (= main_~x~0 (+ .cse0 1)) (= (+ main_~z~0 (* main_~z~0 main_~z~0 v_main_~x~0_15)) (+ main_~y~0 .cse0))))) [2020-07-07 11:34:58,615 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 40) no Hoare annotation was computed. [2020-07-07 11:34:58,615 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: true [2020-07-07 11:34:58,615 INFO L264 CegarLoopResult]: At program point L30-2(lines 30 40) the Hoare annotation is: (exists ((v_main_~x~0_15 Int)) (let ((.cse0 (* main_~z~0 v_main_~x~0_15))) (and (= main_~x~0 (+ .cse0 1)) (= (+ main_~z~0 (* main_~z~0 main_~z~0 v_main_~x~0_15)) (+ main_~y~0 .cse0))))) [2020-07-07 11:34:58,615 INFO L268 CegarLoopResult]: For program point L30-3(lines 30 40) no Hoare annotation was computed. [2020-07-07 11:34:58,616 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-07-07 11:34:58,616 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-07-07 11:34:58,616 INFO L264 CegarLoopResult]: At program point L44(line 44) 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 (+ main_~x~0 v_main_~x~0_12)) (= (+ main_~y~0 v_main_~x~0_12) (+ .cse0 1))))) [2020-07-07 11:34:58,616 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-07-07 11:34:58,616 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-07-07 11:34:58,617 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-07-07 11:34:58,617 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-07-07 11:34:58,617 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-07-07 11:34:58,617 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-07-07 11:34:58,617 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-07 11:34:58,625 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,626 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,631 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,631 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,631 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:34:58 BoogieIcfgContainer [2020-07-07 11:34:58,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:34:58,636 INFO L168 Benchmark]: Toolchain (without parser) took 25497.57 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 101.3 MB in the beginning and 136.1 MB in the end (delta: -34.8 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:34:58,639 INFO L168 Benchmark]: CDTParser took 1.37 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:34:58,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.21 ms. Allocated memory is still 144.7 MB. Free memory was 101.1 MB in the beginning and 91.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:34:58,641 INFO L168 Benchmark]: Boogie Preprocessor took 106.23 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 181.4 MB in the end (delta: -89.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:34:58,642 INFO L168 Benchmark]: RCFGBuilder took 264.79 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 168.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:34:58,649 INFO L168 Benchmark]: TraceAbstraction took 24891.50 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 167.4 MB in the beginning and 136.1 MB in the end (delta: 31.3 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:34:58,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.37 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.21 ms. Allocated memory is still 144.7 MB. Free memory was 101.1 MB in the beginning and 91.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.23 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 181.4 MB in the end (delta: -89.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.79 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 168.1 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24891.50 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 167.4 MB in the beginning and 136.1 MB in the end (delta: 31.3 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 30]: Loop Invariant [2020-07-07 11:34:58,673 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,673 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,674 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,674 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,674 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] [2020-07-07 11:34:58,674 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_15,QUANTIFIED] Derived loop invariant: (\exists v_main_~x~0_15 : int :: x == z * v_main_~x~0_15 + 1 && z + z * z * v_main_~x~0_15 == y + z * v_main_~x~0_15) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.7s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 43 SDslu, 258 SDs, 0 SdLazy, 192 SolverSat, 9 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=4, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 65 HoareAnnotationTreeSize, 14 FomulaSimplifications, 248 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 99 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 5 QuantifiedInterpolants, 7704 SizeOfPredicates, 16 NumberOfNonLiveVariables, 250 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 42/54 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...