/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:59:05,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:59:05,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:59:05,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:59:05,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:59:05,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:59:05,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:59:05,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:59:05,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:59:05,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:59:05,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:59:05,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:59:05,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:59:05,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:59:05,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:59:05,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:59:05,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:59:05,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:59:05,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:59:05,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:59:05,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:59:05,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:59:05,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:59:05,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:59:05,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:59:05,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:59:05,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:59:05,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:59:05,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:59:05,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:59:05,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:59:05,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:59:05,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:59:05,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:59:05,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:59:05,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:59:05,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:59:05,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:59:05,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:59:05,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:59:05,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:59:05,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:59:05,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:59:05,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:59:05,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:59:05,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:59:05,277 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:59:05,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:59:05,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:59:05,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:59:05,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:59:05,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:59:05,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:59:05,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:59:05,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:59:05,280 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:59:05,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:59:05,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:59:05,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:59:05,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:59:05,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:59:05,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:59:05,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:59:05,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:59:05,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:59:05,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:59:05,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:59:05,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:59:05,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:59:05,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:59:05,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:59:05,284 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:59:05,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:59:05,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:59:05,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:59:05,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:59:05,585 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:59:05,586 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2020-08-22 16:59:05,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91129772d/cd54542598be4c6fbdac26aa11b00f6d/FLAGe5aa1ca93 [2020-08-22 16:59:06,104 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:59:06,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2020-08-22 16:59:06,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91129772d/cd54542598be4c6fbdac26aa11b00f6d/FLAGe5aa1ca93 [2020-08-22 16:59:06,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91129772d/cd54542598be4c6fbdac26aa11b00f6d [2020-08-22 16:59:06,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:59:06,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:59:06,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:59:06,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:59:06,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:59:06,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b022f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06, skipping insertion in model container [2020-08-22 16:59:06,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:59:06,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:59:06,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:59:06,776 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:59:06,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:59:06,815 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:59:06,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06 WrapperNode [2020-08-22 16:59:06,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:59:06,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:59:06,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:59:06,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:59:06,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (1/1) ... [2020-08-22 16:59:06,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:59:06,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:59:06,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:59:06,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:59:06,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:59:07,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:59:07,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:59:07,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 16:59:07,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:59:07,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:59:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:59:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:59:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:59:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 16:59:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:59:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:59:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:59:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:59:07,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:59:07,192 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:59:07,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:59:07 BoogieIcfgContainer [2020-08-22 16:59:07,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:59:07,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:59:07,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:59:07,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:59:07,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:59:06" (1/3) ... [2020-08-22 16:59:07,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f157a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:59:07, skipping insertion in model container [2020-08-22 16:59:07,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:59:06" (2/3) ... [2020-08-22 16:59:07,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f157a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:59:07, skipping insertion in model container [2020-08-22 16:59:07,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:59:07" (3/3) ... [2020-08-22 16:59:07,206 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2020-08-22 16:59:07,216 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:59:07,227 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:59:07,244 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:59:07,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:59:07,276 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:59:07,276 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:59:07,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:59:07,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:59:07,277 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:59:07,277 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:59:07,277 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:59:07,300 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-22 16:59:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:59:07,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:07,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:07,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:07,326 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-08-22 16:59:07,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:07,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376609715] [2020-08-22 16:59:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:59:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:59:07,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376609715] [2020-08-22 16:59:07,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:59:07,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 16:59:07,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036895200] [2020-08-22 16:59:07,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 16:59:07,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:07,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 16:59:07,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:59:07,521 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-08-22 16:59:07,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:07,547 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-08-22 16:59:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 16:59:07,548 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-22 16:59:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:07,558 INFO L225 Difference]: With dead ends: 35 [2020-08-22 16:59:07,559 INFO L226 Difference]: Without dead ends: 15 [2020-08-22 16:59:07,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 16:59:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-22 16:59:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-22 16:59:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-22 16:59:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-22 16:59:07,605 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-08-22 16:59:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:07,606 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-22 16:59:07,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 16:59:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-22 16:59:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:59:07,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:07,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:07,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:59:07,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:07,609 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-08-22 16:59:07,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:07,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192284373] [2020-08-22 16:59:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:07,619 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:07,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382760371] [2020-08-22 16:59:07,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:07,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-08-22 16:59:07,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:59:07,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192284373] [2020-08-22 16:59:07,798 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:59:07,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382760371] [2020-08-22 16:59:07,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:59:07,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:59:07,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992998718] [2020-08-22 16:59:07,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:59:07,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:07,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:59:07,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:59:07,802 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-08-22 16:59:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:07,856 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-08-22 16:59:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:59:07,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-22 16:59:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:07,859 INFO L225 Difference]: With dead ends: 25 [2020-08-22 16:59:07,859 INFO L226 Difference]: Without dead ends: 22 [2020-08-22 16:59:07,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:59:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-22 16:59:07,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-22 16:59:07,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-22 16:59:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-08-22 16:59:07,868 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-08-22 16:59:07,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:07,869 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-08-22 16:59:07,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:59:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-08-22 16:59:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:59:07,870 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:07,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:08,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:59:08,079 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:08,080 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-08-22 16:59:08,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:08,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404318069] [2020-08-22 16:59:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:08,090 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:08,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293983065] [2020-08-22 16:59:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:08,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-08-22 16:59:08,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:59:08,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404318069] [2020-08-22 16:59:08,237 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:59:08,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293983065] [2020-08-22 16:59:08,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:59:08,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 16:59:08,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170265944] [2020-08-22 16:59:08,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:59:08,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:08,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:59:08,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:59:08,242 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-08-22 16:59:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:08,343 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-08-22 16:59:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:59:08,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-22 16:59:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:08,345 INFO L225 Difference]: With dead ends: 32 [2020-08-22 16:59:08,346 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 16:59:08,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:59:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 16:59:08,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 16:59:08,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 16:59:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-08-22 16:59:08,360 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-08-22 16:59:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:08,361 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-08-22 16:59:08,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:59:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-08-22 16:59:08,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:59:08,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:08,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:08,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:08,578 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:08,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-08-22 16:59:08,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:08,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200762488] [2020-08-22 16:59:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:08,587 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:08,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863663528] [2020-08-22 16:59:08,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:08,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:59:08,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:08,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2020-08-22 16:59:08,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:59:08,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200762488] [2020-08-22 16:59:08,786 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:59:08,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863663528] [2020-08-22 16:59:08,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:59:08,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 16:59:08,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489753911] [2020-08-22 16:59:08,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:59:08,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:08,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:59:08,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:59:08,790 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 9 states. [2020-08-22 16:59:17,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:17,912 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-08-22 16:59:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:59:17,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-08-22 16:59:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:17,915 INFO L225 Difference]: With dead ends: 39 [2020-08-22 16:59:17,915 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 16:59:17,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-08-22 16:59:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 16:59:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-08-22 16:59:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 16:59:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-08-22 16:59:17,924 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2020-08-22 16:59:17,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:17,925 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-08-22 16:59:17,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:59:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-08-22 16:59:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 16:59:17,926 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:17,926 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:18,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:18,141 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:18,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:18,142 INFO L82 PathProgramCache]: Analyzing trace with hash -854689591, now seen corresponding path program 1 times [2020-08-22 16:59:18,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:18,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538592598] [2020-08-22 16:59:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:18,149 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:18,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251768987] [2020-08-22 16:59:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:59:18,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-08-22 16:59:18,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:18,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:59:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 16:59:18,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538592598] [2020-08-22 16:59:18,401 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 16:59:18,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251768987] [2020-08-22 16:59:18,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:59:18,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 16:59:18,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138058523] [2020-08-22 16:59:18,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:59:18,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:59:18,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:59:18,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:59:18,403 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 7 states. [2020-08-22 16:59:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:59:20,900 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-08-22 16:59:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:59:20,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-08-22 16:59:20,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:59:20,906 INFO L225 Difference]: With dead ends: 41 [2020-08-22 16:59:20,906 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 16:59:20,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:59:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 16:59:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-08-22 16:59:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 16:59:20,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-08-22 16:59:20,914 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 30 [2020-08-22 16:59:20,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:59:20,915 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-08-22 16:59:20,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:59:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-08-22 16:59:20,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 16:59:20,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:59:20,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:59:21,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:21,120 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:59:21,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:59:21,120 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-08-22 16:59:21,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:59:21,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580086433] [2020-08-22 16:59:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:59:21,128 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 16:59:21,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514248351] [2020-08-22 16:59:21,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:59:21,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-08-22 16:59:21,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:59:21,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2020-08-22 16:59:21,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:59:26,293 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-08-22 16:59:26,300 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:59:26,311 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:59:26,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:59:26,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-08-22 16:59:39,729 WARN L193 SmtUtils]: Spent 8.46 s on a formula simplification that was a NOOP. DAG size: 33 [2020-08-22 16:59:39,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 16:59:56,987 WARN L193 SmtUtils]: Spent 8.30 s on a formula simplification that was a NOOP. DAG size: 33 [2020-08-22 16:59:59,044 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-08-22 17:00:07,320 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~y~0_BEFORE_CALL_8 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int)) (let ((.cse1 (+ v_main_~x~0_BEFORE_CALL_8 (- 1)))) (and (let ((.cse0 (div .cse1 v_main_~z~0_BEFORE_CALL_6))) (= (+ (* v_main_~z~0_BEFORE_CALL_6 (div v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6)) .cse0) (+ (* v_main_~z~0_BEFORE_CALL_6 .cse0) 1))) (not (= (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) 1) (+ (* v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6) v_main_~x~0_BEFORE_CALL_8))) (= (mod v_main_~y~0_BEFORE_CALL_8 v_main_~z~0_BEFORE_CALL_6) 0) (not (= v_main_~z~0_BEFORE_CALL_6 0)) (= (mod .cse1 v_main_~z~0_BEFORE_CALL_6) 0)))) is different from false [2020-08-22 17:00:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 17:00:07,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580086433] [2020-08-22 17:00:07,337 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-08-22 17:00:07,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514248351] [2020-08-22 17:00:07,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 17:00:07,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 17:00:07,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701602291] [2020-08-22 17:00:07,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 17:00:07,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 17:00:07,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 17:00:07,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=42, Unknown=3, NotChecked=12, Total=72 [2020-08-22 17:00:07,339 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 9 states. [2020-08-22 17:00:10,490 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 3 [2020-08-22 17:00:13,173 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 42 DAG size of output: 6 [2020-08-22 17:01:42,861 WARN L193 SmtUtils]: Spent 1.16 m on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-08-22 17:02:24,085 WARN L193 SmtUtils]: Spent 36.73 s on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2020-08-22 17:02:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 17:02:29,598 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-08-22 17:02:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 17:02:29,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-08-22 17:02:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 17:02:29,668 INFO L225 Difference]: With dead ends: 34 [2020-08-22 17:02:29,668 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 17:02:29,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 154.7s TimeCoverageRelationStatistics Valid=36, Invalid=92, Unknown=8, NotChecked=20, Total=156 [2020-08-22 17:02:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 17:02:29,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 17:02:29,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 17:02:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 17:02:29,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-08-22 17:02:29,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 17:02:29,669 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 17:02:29,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 17:02:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 17:02:29,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 17:02:29,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-08-22 17:02:29,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 17:02:49,726 WARN L193 SmtUtils]: Spent 19.78 s on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2020-08-22 17:02:55,482 WARN L193 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-08-22 17:03:01,510 WARN L193 SmtUtils]: Spent 6.00 s on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-08-22 17:03:01,513 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 17:03:01,513 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 17:03:01,513 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 17:03:01,513 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 17:03:01,513 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 17:03:01,514 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 17:03:01,514 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2020-08-22 17:03:01,514 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-08-22 17:03:01,514 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-08-22 17:03:01,514 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-08-22 17:03:01,514 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (= main_~z~0 0)) (.cse3 (= main_~x~0 1))) (or (let ((.cse0 (+ main_~x~0 (- 1)))) (and (= (mod .cse0 main_~z~0) 0) (not .cse1) (let ((.cse2 (div .cse0 main_~z~0))) (= (+ (* main_~z~0 .cse2) 1) (+ .cse2 (* main_~z~0 (div main_~y~0 main_~z~0))))) (= (mod main_~y~0 main_~z~0) 0))) (and (= main_~y~0 1) .cse3) (and .cse1 .cse3))) [2020-08-22 17:03:01,515 INFO L268 CegarLoopResult]: For program point L32-1(lines 31 40) no Hoare annotation was computed. [2020-08-22 17:03:01,515 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 43) the Hoare annotation is: true [2020-08-22 17:03:01,515 INFO L264 CegarLoopResult]: At program point L31-2(lines 31 40) the Hoare annotation is: (let ((.cse1 (= main_~z~0 0)) (.cse3 (= main_~x~0 1))) (or (let ((.cse0 (+ main_~x~0 (- 1)))) (and (= (mod .cse0 main_~z~0) 0) (not .cse1) (let ((.cse2 (div .cse0 main_~z~0))) (= (+ (* main_~z~0 .cse2) 1) (+ .cse2 (* main_~z~0 (div main_~y~0 main_~z~0))))) (= (mod main_~y~0 main_~z~0) 0))) (and (= main_~y~0 1) .cse3) (and .cse1 .cse3))) [2020-08-22 17:03:01,515 INFO L264 CegarLoopResult]: At program point L31-3(lines 31 40) the Hoare annotation is: (or (= (+ (* main_~x~0 main_~z~0) 1) (+ main_~x~0 (* main_~y~0 main_~z~0))) (and (= main_~x~0 (+ main_~z~0 1)) (= main_~z~0 main_~y~0))) [2020-08-22 17:03:01,515 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 43) no Hoare annotation was computed. [2020-08-22 17:03:01,515 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 21 43) no Hoare annotation was computed. [2020-08-22 17:03:01,515 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-08-22 17:03:01,516 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2020-08-22 17:03:01,516 INFO L268 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-08-22 17:03:01,516 INFO L268 CegarLoopResult]: For program point L13(lines 13 16) no Hoare annotation was computed. [2020-08-22 17:03:01,516 INFO L268 CegarLoopResult]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2020-08-22 17:03:01,516 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-08-22 17:03:01,516 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-08-22 17:03:01,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:03:01 BoogieIcfgContainer [2020-08-22 17:03:01,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 17:03:01,535 INFO L168 Benchmark]: Toolchain (without parser) took 235036.80 ms. Allocated memory was 140.0 MB in the beginning and 243.8 MB in the end (delta: 103.8 MB). Free memory was 103.1 MB in the beginning and 194.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-22 17:03:01,536 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 17:03:01,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.49 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 93.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-22 17:03:01,538 INFO L168 Benchmark]: Boogie Preprocessor took 115.20 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 181.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-22 17:03:01,539 INFO L168 Benchmark]: RCFGBuilder took 264.96 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-22 17:03:01,539 INFO L168 Benchmark]: TraceAbstraction took 234335.08 ms. Allocated memory was 202.4 MB in the beginning and 243.8 MB in the end (delta: 41.4 MB). Free memory was 168.2 MB in the beginning and 194.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-08-22 17:03:01,544 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.49 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 93.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.20 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 181.5 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.96 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234335.08 ms. Allocated memory was 202.4 MB in the beginning and 243.8 MB in the end (delta: 41.4 MB). Free memory was 168.2 MB in the beginning and 194.0 MB in the end (delta: -25.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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: 31]: Loop Invariant Derived loop invariant: (((((x + -1) % z == 0 && !(z == 0)) && z * ((x + -1) / z) + 1 == (x + -1) / z + z * (y / z)) && y % z == 0) || (y == 1 && x == 1)) || (z == 0 && x == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 202.6s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 154.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 31.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 50 SDslu, 259 SDs, 0 SdLazy, 178 SolverSat, 11 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 28.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 155.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 27 NumberOfFragments, 132 HoareAnnotationTreeSize, 16 FomulaSimplifications, 350 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 149 FormulaSimplificationTreeSizeReductionInter, 31.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 46.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 3 QuantifiedInterpolants, 14428 SizeOfPredicates, 13 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 67/79 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...