/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/array-fpi/eqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:42:17,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:42:17,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:42:17,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:42:17,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:42:17,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:42:17,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:42:17,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:42:17,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:42:17,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:42:17,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:42:17,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:42:17,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:42:17,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:42:17,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:42:17,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:42:17,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:42:17,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:42:17,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:42:17,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:42:17,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:42:17,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:42:17,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:42:17,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:42:17,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:42:17,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:42:17,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:42:17,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:42:17,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:42:17,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:42:17,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:42:17,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:42:17,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:42:17,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:42:17,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:42:17,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:42:17,593 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 13:42:17,643 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:42:17,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:42:17,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:42:17,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:42:17,646 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:42:17,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:42:17,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:42:17,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:42:17,646 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:42:17,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:42:17,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:42:17,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:42:17,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:42:17,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:42:17,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:42:17,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:42:17,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:42:17,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:42:17,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:42:17,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:42:17,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:42:17,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:42:17,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:42:17,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:42:17,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:42:17,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:42:17,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:42:17,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:42:17,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:42:17,652 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:42:18,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:42:18,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:42:18,173 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:42:18,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:42:18,178 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:42:18,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2f.c [2020-09-04 13:42:18,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73dd9108e/1b0a6884e2634082b36153bedb667c37/FLAG767e9df45 [2020-09-04 13:42:18,854 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:42:18,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn2f.c [2020-09-04 13:42:18,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73dd9108e/1b0a6884e2634082b36153bedb667c37/FLAG767e9df45 [2020-09-04 13:42:19,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/73dd9108e/1b0a6884e2634082b36153bedb667c37 [2020-09-04 13:42:19,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:42:19,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:42:19,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:19,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:42:19,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:42:19,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f127883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19, skipping insertion in model container [2020-09-04 13:42:19,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:42:19,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:42:19,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:19,516 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:42:19,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:42:19,560 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:42:19,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19 WrapperNode [2020-09-04 13:42:19,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:42:19,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:42:19,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:42:19,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:42:19,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (1/1) ... [2020-09-04 13:42:19,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:42:19,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:42:19,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:42:19,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:42:19,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (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 13:42:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:42:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:42:19,772 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:42:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:42:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:42:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:42:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:42:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:42:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:42:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:42:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:42:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:42:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:42:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:42:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:42:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:42:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:42:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:42:20,151 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:42:20,152 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 13:42:20,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:20 BoogieIcfgContainer [2020-09-04 13:42:20,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:42:20,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:42:20,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:42:20,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:42:20,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:42:19" (1/3) ... [2020-09-04 13:42:20,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edeac62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:20, skipping insertion in model container [2020-09-04 13:42:20,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:42:19" (2/3) ... [2020-09-04 13:42:20,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edeac62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:42:20, skipping insertion in model container [2020-09-04 13:42:20,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:42:20" (3/3) ... [2020-09-04 13:42:20,176 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn2f.c [2020-09-04 13:42:20,190 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:42:20,201 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:42:20,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:42:20,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:42:20,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:42:20,253 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:42:20,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:42:20,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:42:20,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:42:20,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:42:20,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:42:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-04 13:42:20,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 13:42:20,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:20,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:20,289 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:20,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-09-04 13:42:20,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:20,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205713491] [2020-09-04 13:42:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:20,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:42:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:20,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 13:42:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:20,581 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 13:42:20,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205713491] [2020-09-04 13:42:20,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:20,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:42:20,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468270709] [2020-09-04 13:42:20,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:42:20,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:20,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:42:20,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:20,622 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-04 13:42:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:20,746 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-09-04 13:42:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:42:20,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-04 13:42:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:20,759 INFO L225 Difference]: With dead ends: 58 [2020-09-04 13:42:20,760 INFO L226 Difference]: Without dead ends: 29 [2020-09-04 13:42:20,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:42:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-04 13:42:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-04 13:42:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-04 13:42:20,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-09-04 13:42:20,821 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-09-04 13:42:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:20,821 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-09-04 13:42:20,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:42:20,822 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-09-04 13:42:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-04 13:42:20,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:20,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:20,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:42:20,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:20,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-09-04 13:42:20,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:20,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543509011] [2020-09-04 13:42:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:20,854 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:20,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647954571] [2020-09-04 13:42:20,855 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 13:42:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:20,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-09-04 13:42:20,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:21,076 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:42:21,077 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 39 [2020-09-04 13:42:21,078 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:42:21,110 INFO L625 ElimStorePlain]: treesize reduction 16, result has 59.0 percent of original size [2020-09-04 13:42:21,120 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:42:21,121 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:7 [2020-09-04 13:42:21,167 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:42:21,168 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-09-04 13:42:21,169 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-09-04 13:42:21,183 INFO L625 ElimStorePlain]: treesize reduction 9, result has 43.8 percent of original size [2020-09-04 13:42:21,183 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:42:21,184 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-09-04 13:42:21,235 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 13:42:21,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543509011] [2020-09-04 13:42:21,236 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:21,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647954571] [2020-09-04 13:42:21,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:21,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:42:21,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647084831] [2020-09-04 13:42:21,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:42:21,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:21,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:42:21,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:42:21,241 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 7 states. [2020-09-04 13:42:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:21,392 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-09-04 13:42:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:42:21,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-04 13:42:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:21,396 INFO L225 Difference]: With dead ends: 47 [2020-09-04 13:42:21,397 INFO L226 Difference]: Without dead ends: 45 [2020-09-04 13:42:21,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:42:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-04 13:42:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-09-04 13:42:21,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-04 13:42:21,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-09-04 13:42:21,414 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 22 [2020-09-04 13:42:21,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:21,415 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-09-04 13:42:21,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:42:21,415 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-09-04 13:42:21,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:42:21,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:21,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:21,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:42:21,631 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:21,632 INFO L82 PathProgramCache]: Analyzing trace with hash -2104565367, now seen corresponding path program 1 times [2020-09-04 13:42:21,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:21,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978712236] [2020-09-04 13:42:21,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:21,676 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:21,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812242676] [2020-09-04 13:42:21,679 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 13:42:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:21,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:42:21,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:21,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:21,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978712236] [2020-09-04 13:42:21,774 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:21,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812242676] [2020-09-04 13:42:21,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:21,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:42:21,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203070265] [2020-09-04 13:42:21,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:21,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:21,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:21,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:21,778 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2020-09-04 13:42:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:21,883 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2020-09-04 13:42:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:42:21,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-04 13:42:21,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:21,888 INFO L225 Difference]: With dead ends: 71 [2020-09-04 13:42:21,888 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 13:42:21,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:42:21,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 13:42:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2020-09-04 13:42:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-04 13:42:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-09-04 13:42:21,899 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 24 [2020-09-04 13:42:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:21,899 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-09-04 13:42:21,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-09-04 13:42:21,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:42:21,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:21,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:22,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:22,115 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:22,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:22,116 INFO L82 PathProgramCache]: Analyzing trace with hash -2011180599, now seen corresponding path program 1 times [2020-09-04 13:42:22,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:22,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381713815] [2020-09-04 13:42:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:22,139 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:22,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547309902] [2020-09-04 13:42:22,139 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 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 13:42:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:22,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2020-09-04 13:42:22,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:22,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381713815] [2020-09-04 13:42:22,215 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:22,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547309902] [2020-09-04 13:42:22,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:22,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-04 13:42:22,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953111306] [2020-09-04 13:42:22,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:42:22,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:22,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:42:22,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:42:22,217 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2020-09-04 13:42:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:22,330 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2020-09-04 13:42:22,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:42:22,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-04 13:42:22,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:22,332 INFO L225 Difference]: With dead ends: 66 [2020-09-04 13:42:22,333 INFO L226 Difference]: Without dead ends: 55 [2020-09-04 13:42:22,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:42:22,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-04 13:42:22,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 40. [2020-09-04 13:42:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 13:42:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-09-04 13:42:22,342 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 24 [2020-09-04 13:42:22,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:22,343 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-09-04 13:42:22,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:42:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-09-04 13:42:22,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 13:42:22,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:22,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:22,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:22,560 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:22,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-09-04 13:42:22,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:22,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099139977] [2020-09-04 13:42:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:22,583 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:22,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554990408] [2020-09-04 13:42:22,583 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 13:42:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:22,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 25 conjunts are in the unsatisfiable core [2020-09-04 13:42:22,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:22,672 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-09-04 13:42:22,674 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:42:22,697 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:42:22,706 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-09-04 13:42:22,707 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-04 13:42:22,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:42:22,724 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:42:22,726 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:28 [2020-09-04 13:42:22,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:42:22,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:42:22,782 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:42:22,782 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 59 [2020-09-04 13:42:22,784 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:42:22,823 INFO L625 ElimStorePlain]: treesize reduction 22, result has 69.4 percent of original size [2020-09-04 13:42:22,826 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-09-04 13:42:22,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:50 [2020-09-04 13:42:22,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:42:22,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:42:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:42:22,957 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:42:22,957 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 73 [2020-09-04 13:42:22,960 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:42:23,020 INFO L625 ElimStorePlain]: treesize reduction 30, result has 69.7 percent of original size [2020-09-04 13:42:23,030 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-09-04 13:42:23,031 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:73, output treesize:69 [2020-09-04 13:42:23,249 INFO L173 IndexEqualityManager]: detected equality via solver [2020-09-04 13:42:23,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:42:23,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:42:23,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:42:23,261 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:42:23,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 33 [2020-09-04 13:42:23,268 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:42:23,280 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:42:23,284 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:42:23,285 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:81, output treesize:7 [2020-09-04 13:42:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:23,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099139977] [2020-09-04 13:42:23,348 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:23,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554990408] [2020-09-04 13:42:23,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:42:23,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-04 13:42:23,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901390050] [2020-09-04 13:42:23,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 13:42:23,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:23,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 13:42:23,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:42:23,350 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 10 states. [2020-09-04 13:42:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:25,043 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-09-04 13:42:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 13:42:25,043 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-09-04 13:42:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:25,045 INFO L225 Difference]: With dead ends: 59 [2020-09-04 13:42:25,045 INFO L226 Difference]: Without dead ends: 57 [2020-09-04 13:42:25,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-04 13:42:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-04 13:42:25,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2020-09-04 13:42:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-04 13:42:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-09-04 13:42:25,055 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 26 [2020-09-04 13:42:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:25,056 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-09-04 13:42:25,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 13:42:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-09-04 13:42:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 13:42:25,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:25,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:25,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:25,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:25,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:25,275 INFO L82 PathProgramCache]: Analyzing trace with hash 913238305, now seen corresponding path program 1 times [2020-09-04 13:42:25,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:25,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292650654] [2020-09-04 13:42:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:25,291 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:25,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715912164] [2020-09-04 13:42:25,292 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 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 13:42:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:42:25,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2020-09-04 13:42:25,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:42:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:42:25,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292650654] [2020-09-04 13:42:25,408 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:42:25,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715912164] [2020-09-04 13:42:25,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:42:25,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:42:25,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909201364] [2020-09-04 13:42:25,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:42:25,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:42:25,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:42:25,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:42:25,410 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-09-04 13:42:25,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:42:25,563 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-09-04 13:42:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:42:25,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-04 13:42:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:42:25,566 INFO L225 Difference]: With dead ends: 63 [2020-09-04 13:42:25,566 INFO L226 Difference]: Without dead ends: 41 [2020-09-04 13:42:25,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:42:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-04 13:42:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2020-09-04 13:42:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-04 13:42:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-09-04 13:42:25,574 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 30 [2020-09-04 13:42:25,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:42:25,575 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-09-04 13:42:25,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:42:25,575 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-09-04 13:42:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 13:42:25,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:42:25,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:42:25,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-04 13:42:25,790 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:42:25,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:42:25,790 INFO L82 PathProgramCache]: Analyzing trace with hash 890841693, now seen corresponding path program 1 times [2020-09-04 13:42:25,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:42:25,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792806095] [2020-09-04 13:42:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:42:25,811 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:42:25,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076764808] [2020-09-04 13:42:25,812 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:25,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:42:25,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:42:25,922 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:42:25,922 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:42:26,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:42:26,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:42:26 BoogieIcfgContainer [2020-09-04 13:42:26,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:42:26,185 INFO L168 Benchmark]: Toolchain (without parser) took 6964.96 ms. Allocated memory was 141.6 MB in the beginning and 244.3 MB in the end (delta: 102.8 MB). Free memory was 105.1 MB in the beginning and 197.0 MB in the end (delta: -91.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:26,185 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:42:26,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.14 ms. Allocated memory is still 141.6 MB. Free memory was 104.7 MB in the beginning and 94.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:26,187 INFO L168 Benchmark]: Boogie Preprocessor took 130.83 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 94.5 MB in the beginning and 182.0 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:26,188 INFO L168 Benchmark]: RCFGBuilder took 466.18 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 164.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:26,189 INFO L168 Benchmark]: TraceAbstraction took 6021.70 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 163.8 MB in the beginning and 197.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:42:26,192 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.14 ms. Allocated memory is still 141.6 MB. Free memory was 104.7 MB in the beginning and 94.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.83 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 94.5 MB in the beginning and 182.0 MB in the end (delta: -87.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 466.18 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 164.5 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6021.70 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 163.8 MB in the beginning and 197.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=6, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=2] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=2] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=2] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=2] [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 1 [L32] i=1 VAL [\old(N)=0, a={-2:0}, b={-1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={-2:0}, N=2] [L32] COND TRUE i