/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/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:45:35,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:45:35,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:45:35,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:45:35,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:45:35,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:45:35,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:45:35,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:45:35,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:45:35,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:45:35,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:45:35,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:45:35,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:45:35,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:45:35,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:45:35,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:45:35,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:45:35,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:45:35,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:45:35,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:45:35,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:45:35,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:45:35,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:45:35,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:45:35,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:45:35,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:45:35,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:45:35,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:45:35,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:45:35,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:45:35,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:45:35,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:45:35,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:45:35,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:45:35,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:45:35,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:45:35,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:45:35,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:45:35,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:45:35,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:45:35,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:45:35,303 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 13:45:35,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:45:35,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:45:35,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:45:35,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:45:35,332 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:45:35,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:45:35,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:45:35,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:45:35,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:45:35,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:45:35,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:45:35,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:45:35,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:45:35,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:45:35,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:45:35,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:45:35,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:45:35,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:45:35,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:45:35,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:45:35,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:45:35,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:45:35,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:45:35,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:45:35,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:45:35,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:45:35,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:45:35,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:45:35,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:45:35,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:45:35,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:45:35,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:45:35,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:45:35,849 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:45:35,850 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:45:35,851 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-09-04 13:45:35,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f0656716/a9c779e0872640cbb690a78146c944f1/FLAG65f94c0d4 [2020-09-04 13:45:36,475 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:45:36,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-09-04 13:45:36,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f0656716/a9c779e0872640cbb690a78146c944f1/FLAG65f94c0d4 [2020-09-04 13:45:36,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f0656716/a9c779e0872640cbb690a78146c944f1 [2020-09-04 13:45:36,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:45:36,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:45:36,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:45:36,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:45:36,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:45:36,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:45:36" (1/1) ... [2020-09-04 13:45:36,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b5e573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:36, skipping insertion in model container [2020-09-04 13:45:36,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:45:36" (1/1) ... [2020-09-04 13:45:36,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:45:36,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:45:37,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:45:37,097 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:45:37,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:45:37,133 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:45:37,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37 WrapperNode [2020-09-04 13:45:37,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:45:37,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:45:37,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:45:37,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:45:37,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (1/1) ... [2020-09-04 13:45:37,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (1/1) ... [2020-09-04 13:45:37,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (1/1) ... [2020-09-04 13:45:37,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (1/1) ... [2020-09-04 13:45:37,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (1/1) ... [2020-09-04 13:45:37,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (1/1) ... [2020-09-04 13:45:37,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (1/1) ... [2020-09-04 13:45:37,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:45:37,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:45:37,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:45:37,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:45:37,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (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 13:45:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:45:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:45:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:45:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 13:45:37,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:45:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:45:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:45:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:45:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:45:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 13:45:37,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:45:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:45:37,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:45:37,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:45:37,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:45:37,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:45:37 BoogieIcfgContainer [2020-09-04 13:45:37,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:45:37,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:45:37,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:45:37,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:45:37,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:45:36" (1/3) ... [2020-09-04 13:45:37,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca980e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:45:37, skipping insertion in model container [2020-09-04 13:45:37,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:45:37" (2/3) ... [2020-09-04 13:45:37,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca980e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:45:37, skipping insertion in model container [2020-09-04 13:45:37,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:45:37" (3/3) ... [2020-09-04 13:45:37,620 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2020-09-04 13:45:37,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:45:37,668 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:45:37,698 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:45:37,728 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:45:37,729 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:45:37,729 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:45:37,729 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:45:37,729 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:45:37,729 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:45:37,729 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:45:37,729 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:45:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-09-04 13:45:37,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:45:37,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:37,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:37,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash -849943384, now seen corresponding path program 1 times [2020-09-04 13:45:37,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:37,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601402645] [2020-09-04 13:45:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:37,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:45:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:37,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:45:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:37,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 13:45:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:37,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 13:45:37,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601402645] [2020-09-04 13:45:37,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:45:37,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 13:45:37,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275073109] [2020-09-04 13:45:37,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 13:45:37,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:37,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 13:45:37,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 13:45:37,980 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-09-04 13:45:38,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:38,007 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2020-09-04 13:45:38,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 13:45:38,009 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-09-04 13:45:38,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:38,022 INFO L225 Difference]: With dead ends: 50 [2020-09-04 13:45:38,023 INFO L226 Difference]: Without dead ends: 23 [2020-09-04 13:45:38,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 13:45:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-04 13:45:38,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-04 13:45:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-04 13:45:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-09-04 13:45:38,083 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2020-09-04 13:45:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:38,083 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-09-04 13:45:38,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 13:45:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-09-04 13:45:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 13:45:38,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:38,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:38,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:45:38,087 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:38,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:38,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1193991140, now seen corresponding path program 1 times [2020-09-04 13:45:38,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:38,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696858804] [2020-09-04 13:45:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:38,109 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:38,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204649670] [2020-09-04 13:45:38,110 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 13:45:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:38,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2020-09-04 13:45:38,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:45:38,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696858804] [2020-09-04 13:45:38,369 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:38,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204649670] [2020-09-04 13:45:38,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:45:38,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:45:38,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473310589] [2020-09-04 13:45:38,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:45:38,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:38,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:45:38,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:45:38,374 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 8 states. [2020-09-04 13:45:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:38,522 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-09-04 13:45:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:45:38,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-04 13:45:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:38,525 INFO L225 Difference]: With dead ends: 34 [2020-09-04 13:45:38,525 INFO L226 Difference]: Without dead ends: 32 [2020-09-04 13:45:38,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:45:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-04 13:45:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-09-04 13:45:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-04 13:45:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-04 13:45:38,538 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2020-09-04 13:45:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:38,541 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-04 13:45:38,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:45:38,541 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-04 13:45:38,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:45:38,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:38,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:38,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:45:38,754 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:38,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:38,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1415100442, now seen corresponding path program 1 times [2020-09-04 13:45:38,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:38,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703937981] [2020-09-04 13:45:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:38,777 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:38,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017729381] [2020-09-04 13:45:38,777 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 13:45:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:38,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-09-04 13:45:38,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 13:45:38,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703937981] [2020-09-04 13:45:38,915 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:38,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017729381] [2020-09-04 13:45:38,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:38,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 13:45:38,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752215789] [2020-09-04 13:45:38,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:45:38,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:38,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:45:38,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:45:38,919 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-09-04 13:45:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:41,100 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-04 13:45:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:45:41,102 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-04 13:45:41,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:41,117 INFO L225 Difference]: With dead ends: 37 [2020-09-04 13:45:41,117 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 13:45:41,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:45:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 13:45:41,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-09-04 13:45:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 13:45:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-04 13:45:41,126 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 27 [2020-09-04 13:45:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:41,126 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-04 13:45:41,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:45:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-04 13:45:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 13:45:41,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:41,132 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:41,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:41,333 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:41,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1831429119, now seen corresponding path program 1 times [2020-09-04 13:45:41,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:41,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591683832] [2020-09-04 13:45:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:41,348 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:41,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767999273] [2020-09-04 13:45:41,348 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 13:45:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:41,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2020-09-04 13:45:41,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-04 13:45:41,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591683832] [2020-09-04 13:45:41,458 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:41,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767999273] [2020-09-04 13:45:41,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:41,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-04 13:45:41,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472538372] [2020-09-04 13:45:41,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:45:41,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:41,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:45:41,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:45:41,462 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-09-04 13:45:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:41,565 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-09-04 13:45:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:45:41,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-04 13:45:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:41,568 INFO L225 Difference]: With dead ends: 60 [2020-09-04 13:45:41,568 INFO L226 Difference]: Without dead ends: 44 [2020-09-04 13:45:41,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 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 13:45:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-04 13:45:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-04 13:45:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 13:45:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-09-04 13:45:41,580 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 29 [2020-09-04 13:45:41,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:41,580 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-09-04 13:45:41,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:45:41,581 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-09-04 13:45:41,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 13:45:41,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:41,582 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:41,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:41,798 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:41,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:41,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1286102758, now seen corresponding path program 2 times [2020-09-04 13:45:41,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:41,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417715960] [2020-09-04 13:45:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:41,813 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:41,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50748510] [2020-09-04 13:45:41,814 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 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 13:45:41,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:45:41,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:45:41,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2020-09-04 13:45:41,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-04 13:45:41,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417715960] [2020-09-04 13:45:41,972 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:41,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50748510] [2020-09-04 13:45:41,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:41,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 13:45:41,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902826379] [2020-09-04 13:45:41,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:45:41,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:41,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:45:41,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:45:41,974 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 7 states. [2020-09-04 13:45:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:42,074 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-09-04 13:45:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:45:42,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-04 13:45:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:42,076 INFO L225 Difference]: With dead ends: 68 [2020-09-04 13:45:42,076 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 13:45:42,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:45:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 13:45:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-04 13:45:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-04 13:45:42,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-04 13:45:42,088 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 37 [2020-09-04 13:45:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:42,089 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-04 13:45:42,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:45:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-04 13:45:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 13:45:42,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:42,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:42,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:42,306 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:42,308 INFO L82 PathProgramCache]: Analyzing trace with hash 274985508, now seen corresponding path program 1 times [2020-09-04 13:45:42,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:42,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104720483] [2020-09-04 13:45:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:42,329 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:42,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365033442] [2020-09-04 13:45:42,329 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 13:45:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:45:42,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 21 conjunts are in the unsatisfiable core [2020-09-04 13:45:42,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-04 13:45:42,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104720483] [2020-09-04 13:45:42,489 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:42,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365033442] [2020-09-04 13:45:42,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:42,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 13:45:42,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132019645] [2020-09-04 13:45:42,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:45:42,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:42,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:45:42,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:45:42,492 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2020-09-04 13:45:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:42,636 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2020-09-04 13:45:42,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 13:45:42,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-04 13:45:42,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:42,639 INFO L225 Difference]: With dead ends: 84 [2020-09-04 13:45:42,639 INFO L226 Difference]: Without dead ends: 68 [2020-09-04 13:45:42,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:45:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-04 13:45:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-04 13:45:42,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 13:45:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-09-04 13:45:42,652 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 37 [2020-09-04 13:45:42,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:42,653 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-09-04 13:45:42,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:45:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-09-04 13:45:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 13:45:42,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:45:42,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:45:42,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-09-04 13:45:42,870 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:45:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:45:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash 584019147, now seen corresponding path program 3 times [2020-09-04 13:45:42,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:45:42,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098975999] [2020-09-04 13:45:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:45:42,881 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-04 13:45:42,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770717307] [2020-09-04 13:45:42,882 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 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 13:45:42,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-04 13:45:42,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:45:42,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 20 conjunts are in the unsatisfiable core [2020-09-04 13:45:42,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:45:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-04 13:45:43,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098975999] [2020-09-04 13:45:43,026 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-09-04 13:45:43,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770717307] [2020-09-04 13:45:43,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:45:43,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-04 13:45:43,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485174620] [2020-09-04 13:45:43,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 13:45:43,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:45:43,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 13:45:43,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 13:45:43,029 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 8 states. [2020-09-04 13:45:45,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:45:45,127 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-09-04 13:45:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:45:45,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-09-04 13:45:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:45:45,131 INFO L225 Difference]: With dead ends: 70 [2020-09-04 13:45:45,131 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:45:45,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:45:45,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:45:45,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:45:45,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:45:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:45:45,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-09-04 13:45:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:45:45,134 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:45:45,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 13:45:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:45:45,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:45:45,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:45:45,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:45:45,520 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:45:45,520 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:45:45,520 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:45:45,521 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:45:45,521 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:45:45,521 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:45:45,521 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2020-09-04 13:45:45,521 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-04 13:45:45,521 INFO L268 CegarLoopResult]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2020-09-04 13:45:45,521 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2020-09-04 13:45:45,522 INFO L264 CegarLoopResult]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (* main_~y1~0 main_~x2~0))) (and (= main_~x1~0 (+ main_~y2~0 .cse0)) (not (= main_~x2~0 0)) (= (+ main_~y2~0 main_~y3~0 .cse0) main_~x1~0))) [2020-09-04 13:45:45,522 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-04 13:45:45,522 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 49) no Hoare annotation was computed. [2020-09-04 13:45:45,522 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 49) no Hoare annotation was computed. [2020-09-04 13:45:45,522 INFO L268 CegarLoopResult]: For program point L38(lines 38 45) no Hoare annotation was computed. [2020-09-04 13:45:45,522 INFO L264 CegarLoopResult]: At program point L38-2(lines 33 46) the Hoare annotation is: (and (not (= main_~x2~0 0)) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0)) [2020-09-04 13:45:45,523 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (and (not (= main_~x2~0 0)) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0)) [2020-09-04 13:45:45,523 INFO L268 CegarLoopResult]: For program point L34-1(lines 33 46) no Hoare annotation was computed. [2020-09-04 13:45:45,523 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 20 49) the Hoare annotation is: true [2020-09-04 13:45:45,523 INFO L271 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-09-04 13:45:45,523 INFO L271 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-09-04 13:45:45,523 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-04 13:45:45,524 INFO L268 CegarLoopResult]: For program point L15(lines 15 16) no Hoare annotation was computed. [2020-09-04 13:45:45,524 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2020-09-04 13:45:45,524 INFO L268 CegarLoopResult]: For program point L14(lines 14 17) no Hoare annotation was computed. [2020-09-04 13:45:45,524 INFO L268 CegarLoopResult]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2020-09-04 13:45:45,524 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2020-09-04 13:45:45,524 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-09-04 13:45:45,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:45:45 BoogieIcfgContainer [2020-09-04 13:45:45,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:45:45,550 INFO L168 Benchmark]: Toolchain (without parser) took 8723.47 ms. Allocated memory was 140.0 MB in the beginning and 243.8 MB in the end (delta: 103.8 MB). Free memory was 103.5 MB in the beginning and 211.5 MB in the end (delta: -108.0 MB). Peak memory consumption was 114.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:45,551 INFO L168 Benchmark]: CDTParser took 1.63 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:45:45,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.53 ms. Allocated memory is still 140.0 MB. Free memory was 103.3 MB in the beginning and 93.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:45,554 INFO L168 Benchmark]: Boogie Preprocessor took 112.58 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 182.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:45,555 INFO L168 Benchmark]: RCFGBuilder took 347.56 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 169.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:45,556 INFO L168 Benchmark]: TraceAbstraction took 7946.41 ms. Allocated memory was 202.9 MB in the beginning and 243.8 MB in the end (delta: 40.9 MB). Free memory was 168.6 MB in the beginning and 211.5 MB in the end (delta: -42.9 MB). Peak memory consumption was 116.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:45:45,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.63 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.53 ms. Allocated memory is still 140.0 MB. Free memory was 103.3 MB in the beginning and 93.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.58 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.6 MB in the beginning and 182.9 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 347.56 ms. Allocated memory is still 202.9 MB. Free memory was 182.9 MB in the beginning and 169.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7946.41 ms. Allocated memory was 202.9 MB in the beginning and 243.8 MB in the end (delta: 40.9 MB). Free memory was 168.6 MB in the beginning and 211.5 MB in the end (delta: -42.9 MB). Peak memory consumption was 116.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: !(x2 == 0) && y2 + y3 + y1 * x2 == x1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 61 SDslu, 522 SDs, 0 SdLazy, 345 SolverSat, 21 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 28 PreInvPairs, 44 NumberOfFragments, 54 HoareAnnotationTreeSize, 28 FomulaSimplifications, 463 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 217 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 20250 SizeOfPredicates, 16 NumberOfNonLiveVariables, 434 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 82/102 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...