/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/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:45:25,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:45:25,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:45:25,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:45:25,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:45:25,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:45:25,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:45:25,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:45:25,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:45:25,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:45:25,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:45:25,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:45:25,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:45:25,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:45:25,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:45:25,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:45:25,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:45:25,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:45:25,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:45:25,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:45:25,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:45:25,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:45:25,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:45:25,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:45:25,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:45:25,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:45:25,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:45:25,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:45:25,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:45:25,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:45:25,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:45:25,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:45:25,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:45:25,962 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:45:25,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:45:25,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:45:25,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:45:25,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:45:25,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:45:25,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:45:25,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:45:25,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:45:25,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:45:25,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:45:25,966 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:45:25,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:45:25,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:45:25,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:45:25,967 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:45:25,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:45:25,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:45:25,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:45:25,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:45:25,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:45:25,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:45:25,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:45:25,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:45:25,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:45:25,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:45:26,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:45:26,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:45:26,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:45:26,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:45:26,448 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:45:26,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2020-09-04 13:45:26,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563d1c820/37c59c789a364be091ccfb9d0b818a6c/FLAG873964286 [2020-09-04 13:45:27,080 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:45:27,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/geo2.c [2020-09-04 13:45:27,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563d1c820/37c59c789a364be091ccfb9d0b818a6c/FLAG873964286 [2020-09-04 13:45:27,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/563d1c820/37c59c789a364be091ccfb9d0b818a6c [2020-09-04 13:45:27,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:45:27,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:45:27,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:45:27,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:45:27,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:45:27,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a18185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27, skipping insertion in model container [2020-09-04 13:45:27,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:45:27,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:45:27,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:45:27,700 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:45:27,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:45:27,736 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:45:27,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27 WrapperNode [2020-09-04 13:45:27,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:45:27,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:45:27,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:45:27,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:45:27,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (1/1) ... [2020-09-04 13:45:27,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:45:27,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:45:27,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:45:27,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:45:27,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:45:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:45:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:45:27,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:45:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:45:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:45:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:45:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:45:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:45:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:45:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:45:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:45:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:45:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:45:28,176 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:45:28,176 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:45:28,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:45:28 BoogieIcfgContainer [2020-09-04 13:45:28,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:45:28,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:45:28,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:45:28,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:45:28,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:45:27" (1/3) ... [2020-09-04 13:45:28,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3709e995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:45:28, skipping insertion in model container [2020-09-04 13:45:28,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:27" (2/3) ... [2020-09-04 13:45:28,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3709e995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:45:28, skipping insertion in model container [2020-09-04 13:45:28,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:45:28" (3/3) ... [2020-09-04 13:45:28,191 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2020-09-04 13:45:28,201 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:45:28,211 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:45:28,233 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:45:28,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:45:28,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:45:28,267 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:45:28,267 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:45:28,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:45:28,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:45:28,268 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:45:28,268 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:45:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-09-04 13:45:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:45:28,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:28,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:28,302 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:28,310 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-09-04 13:45:28,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:28,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040649098] [2020-09-04 13:45:28,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:28,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:45:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:28,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:28,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040649098] [2020-09-04 13:45:28,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:45:28,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 13:45:28,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828565969] [2020-09-04 13:45:28,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 13:45:28,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:28,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 13:45:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:45:28,549 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-09-04 13:45:28,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:28,575 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-09-04 13:45:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 13:45:28,577 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-04 13:45:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:28,590 INFO L225 Difference]: With dead ends: 35 [2020-09-04 13:45:28,590 INFO L226 Difference]: Without dead ends: 15 [2020-09-04 13:45:28,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:45:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-04 13:45:28,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-04 13:45:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-04 13:45:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-09-04 13:45:28,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-09-04 13:45:28,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:28,647 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-09-04 13:45:28,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 13:45:28,647 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-09-04 13:45:28,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 13:45:28,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:28,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:28,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:45:28,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:28,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:28,650 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-09-04 13:45:28,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:28,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18850595] [2020-09-04 13:45:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:28,660 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:28,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11274835] [2020-09-04 13:45:28,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:45:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:28,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-09-04 13:45:28,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:28,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18850595] [2020-09-04 13:45:28,854 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:28,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11274835] [2020-09-04 13:45:28,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:45:28,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:45:28,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602259310] [2020-09-04 13:45:28,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:45:28,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:28,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:45:28,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:45:28,858 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-09-04 13:45:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:28,921 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-09-04 13:45:28,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:45:28,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-09-04 13:45:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:28,923 INFO L225 Difference]: With dead ends: 25 [2020-09-04 13:45:28,923 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 13:45:28,924 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 [2020-09-04 13:45:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 13:45:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-04 13:45:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-04 13:45:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-04 13:45:28,934 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-09-04 13:45:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:28,935 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-04 13:45:28,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:45:28,935 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-04 13:45:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:45:28,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:28,936 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:29,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:45:29,150 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:29,151 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-09-04 13:45:29,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:29,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163155598] [2020-09-04 13:45:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:29,160 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:29,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103432637] [2020-09-04 13:45:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:45:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:29,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-09-04 13:45:29,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:45:29,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163155598] [2020-09-04 13:45:29,306 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:29,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103432637] [2020-09-04 13:45:29,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:29,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-04 13:45:29,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194116297] [2020-09-04 13:45:29,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:45:29,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:29,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:45:29,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:45:29,309 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-09-04 13:45:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:29,387 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-09-04 13:45:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:45:29,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-04 13:45:29,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:29,389 INFO L225 Difference]: With dead ends: 32 [2020-09-04 13:45:29,389 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 13:45:29,390 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 [2020-09-04 13:45:29,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 13:45:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-04 13:45:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-04 13:45:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-09-04 13:45:29,398 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-09-04 13:45:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:29,399 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-09-04 13:45:29,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:45:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-09-04 13:45:29,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:45:29,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:29,401 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:29,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:29,615 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:29,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-09-04 13:45:29,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:29,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584766265] [2020-09-04 13:45:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:29,625 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:29,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489278655] [2020-09-04 13:45:29,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:45:29,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:45:29,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:45:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2020-09-04 13:45:29,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:45:29,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584766265] [2020-09-04 13:45:29,872 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:29,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489278655] [2020-09-04 13:45:29,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:29,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-04 13:45:29,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005005881] [2020-09-04 13:45:29,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:45:29,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:29,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:45:29,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:45:29,875 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2020-09-04 13:45:42,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:42,307 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-09-04 13:45:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:45:42,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-09-04 13:45:42,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:42,309 INFO L225 Difference]: With dead ends: 39 [2020-09-04 13:45:42,310 INFO L226 Difference]: Without dead ends: 37 [2020-09-04 13:45:42,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:45:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-04 13:45:42,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-09-04 13:45:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-04 13:45:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-04 13:45:42,327 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2020-09-04 13:45:42,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:42,327 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-04 13:45:42,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:45:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-04 13:45:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 13:45:42,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:42,330 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:42,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:42,531 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:42,532 INFO L82 PathProgramCache]: Analyzing trace with hash -854689591, now seen corresponding path program 1 times [2020-09-04 13:45:42,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:42,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617189846] [2020-09-04 13:45:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:42,538 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:42,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651167050] [2020-09-04 13:45:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:45:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:42,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-04 13:45:42,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:42,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:45:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-04 13:45:42,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617189846] [2020-09-04 13:45:42,690 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:42,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651167050] [2020-09-04 13:45:42,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:42,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 13:45:42,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115517423] [2020-09-04 13:45:42,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:45:42,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:42,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:45:42,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:45:42,692 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 7 states. [2020-09-04 13:45:44,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:44,989 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-09-04 13:45:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:45:44,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-04 13:45:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:44,996 INFO L225 Difference]: With dead ends: 41 [2020-09-04 13:45:44,996 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 13:45:44,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:45:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 13:45:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-04 13:45:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-04 13:45:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-09-04 13:45:45,016 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 30 [2020-09-04 13:45:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:45,018 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-09-04 13:45:45,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:45:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-09-04 13:45:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 13:45:45,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:45,022 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:45,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:45,223 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:45,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:45,224 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-09-04 13:45:45,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:45,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714853796] [2020-09-04 13:45:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:45,232 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:45,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226810428] [2020-09-04 13:45:45,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:45:45,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-04 13:45:45,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:45:45,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2020-09-04 13:45:45,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:48,526 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-09-04 13:45:48,533 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:45:48,545 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-04 13:45:48,558 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-04 13:45:48,566 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-04 13:46:04,160 WARN L193 SmtUtils]: Spent 10.58 s on a formula simplification that was a NOOP. DAG size: 33 [2020-09-04 13:46:04,172 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:46:20,923 WARN L193 SmtUtils]: Spent 8.50 s on a formula simplification that was a NOOP. DAG size: 33 [2020-09-04 13:46:22,996 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-04 13:46:31,251 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~y~0_BEFORE_CALL_8 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (let ((.cse1 (+ v_main_~x~0_BEFORE_CALL_8 (- 1)))) (and (let ((.cse0 (div .cse1 v_main_~z~0_BEFORE_CALL_6))) (= (+ (* v_main_~z~0_BEFORE_CALL_6 (div v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6)) .cse0) (+ (* v_main_~z~0_BEFORE_CALL_6 .cse0) 1))) (not (= (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) 1) (+ (* v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6) v_main_~x~0_BEFORE_CALL_8))) (= (mod v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6) 0) (not (= v_main_~z~0_BEFORE_CALL_6 0)) (= (mod .cse1 v_main_~z~0_BEFORE_CALL_6) 0)))) is different from false [2020-09-04 13:46:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-04 13:46:31,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714853796] [2020-09-04 13:46:31,261 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:46:31,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226810428] [2020-09-04 13:46:31,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:46:31,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 13:46:31,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730806830] [2020-09-04 13:46:31,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:46:31,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:46:31,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:46:31,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=42, Unknown=3, NotChecked=12, Total=72 [2020-09-04 13:46:31,263 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 9 states. [2020-09-04 13:46:34,101 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 3 [2020-09-04 13:46:36,597 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 42 DAG size of output: 6 [2020-09-04 13:47:37,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:47:37,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-04 13:47:37,615 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:59) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:134) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:672) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:471) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 54 more [2020-09-04 13:47:37,622 INFO L168 Benchmark]: Toolchain (without parser) took 130170.73 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 103.6 MB in the beginning and 94.9 MB in the end (delta: 8.7 MB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:47:37,623 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-04 13:47:37,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.4 MB in the beginning and 93.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:47:37,625 INFO L168 Benchmark]: Boogie Preprocessor took 128.15 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 183.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:47:37,632 INFO L168 Benchmark]: RCFGBuilder took 313.93 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 170.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:47:37,634 INFO L168 Benchmark]: TraceAbstraction took 129438.47 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 169.5 MB in the beginning and 94.9 MB in the end (delta: 74.6 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:47:37,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.4 MB in the beginning and 93.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.15 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 183.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 313.93 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 170.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 129438.47 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 169.5 MB in the beginning and 94.9 MB in the end (delta: 74.6 MB). Peak memory consumption was 105.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...