/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 0.1.25-86f66a4 [2020-07-07 11:34:33,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:34:33,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:34:33,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:34:33,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:34:33,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:34:33,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:34:33,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:34:33,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:34:33,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:34:33,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:34:33,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:34:33,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:34:33,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:34:33,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:34:33,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:34:33,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:34:33,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:34:33,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:34:33,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:34:33,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:34:33,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:34:33,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:34:33,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:34:33,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:34:33,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:34:33,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:34:33,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:34:33,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:34:33,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:34:33,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:34:33,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:34:33,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:34:33,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:34:33,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:34:33,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:34:33,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:34:33,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:34:33,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:34:33,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:34:33,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:34:33,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:34:33,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:34:33,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:34:33,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:34:33,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:34:33,084 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:34:33,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:34:33,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:34:33,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:34:33,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:34:33,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:34:33,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:34:33,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:34:33,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:34:33,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:34:33,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:34:33,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:34:33,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:34:33,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:34:33,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:34:33,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:34:33,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:34:33,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:34:33,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:34:33,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:34:33,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:34:33,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:34:33,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:34:33,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:34:33,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:34:33,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:34:33,361 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:34:33,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:34:33,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:34:33,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:34:33,377 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:34:33,378 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2020-07-07 11:34:33,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46d46d11c/63e1d39d0aca40d788e7e5cd22c0afbf/FLAG220cdf3a9 [2020-07-07 11:34:33,962 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:34:33,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2020-07-07 11:34:33,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46d46d11c/63e1d39d0aca40d788e7e5cd22c0afbf/FLAG220cdf3a9 [2020-07-07 11:34:34,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46d46d11c/63e1d39d0aca40d788e7e5cd22c0afbf [2020-07-07 11:34:34,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:34:34,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:34:34,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:34:34,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:34:34,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:34:34,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3822c656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34, skipping insertion in model container [2020-07-07 11:34:34,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:34:34,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:34:34,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:34:34,625 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:34:34,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:34:34,664 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:34:34,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34 WrapperNode [2020-07-07 11:34:34,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:34:34,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:34:34,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:34:34,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:34:34,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:34:34,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:34:34,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:34:34,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:34:34,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:34:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:34:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:34:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:34:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:34:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:34:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:34:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:34:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:34:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:34:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:34:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:34:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:34:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:34:35,170 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:34:35,170 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:34:35,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:34:35 BoogieIcfgContainer [2020-07-07 11:34:35,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:34:35,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:34:35,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:34:35,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:34:35,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:34:34" (1/3) ... [2020-07-07 11:34:35,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5970ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:34:35, skipping insertion in model container [2020-07-07 11:34:35,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34" (2/3) ... [2020-07-07 11:34:35,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5970ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:34:35, skipping insertion in model container [2020-07-07 11:34:35,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:34:35" (3/3) ... [2020-07-07 11:34:35,186 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2020-07-07 11:34:35,196 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:34:35,208 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:34:35,222 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:34:35,246 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:34:35,246 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:34:35,246 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:34:35,246 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:34:35,246 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:34:35,246 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:34:35,246 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:34:35,247 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:34:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-07 11:34:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:34:35,269 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:35,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:35,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-07 11:34:35,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:35,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450422689] [2020-07-07 11:34:35,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:35,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450422689] [2020-07-07 11:34:35,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:34:35,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 11:34:35,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554390585] [2020-07-07 11:34:35,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 11:34:35,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:35,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 11:34:35,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:34:35,441 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-07 11:34:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:35,462 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-07 11:34:35,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 11:34:35,464 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-07 11:34:35,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:35,474 INFO L225 Difference]: With dead ends: 35 [2020-07-07 11:34:35,474 INFO L226 Difference]: Without dead ends: 15 [2020-07-07 11:34:35,478 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 [2020-07-07 11:34:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-07 11:34:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-07 11:34:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-07 11:34:35,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-07 11:34:35,519 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-07 11:34:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:35,520 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-07 11:34:35,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 11:34:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-07 11:34:35,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:34:35,521 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:35,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:35,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:34:35,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:35,522 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-07 11:34:35,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:35,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098412196] [2020-07-07 11:34:35,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:35,532 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:35,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487443586] [2020-07-07 11:34:35,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,599 INFO L264 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-07 11:34:35,606 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:35,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098412196] [2020-07-07 11:34:35,685 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:35,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487443586] [2020-07-07 11:34:35,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:34:35,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:34:35,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818694276] [2020-07-07 11:34:35,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:34:35,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:35,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:34:35,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:34:35,691 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-07 11:34:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:35,761 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-07 11:34:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:34:35,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-07 11:34:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:35,763 INFO L225 Difference]: With dead ends: 25 [2020-07-07 11:34:35,763 INFO L226 Difference]: Without dead ends: 22 [2020-07-07 11:34:35,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:34:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-07 11:34:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-07 11:34:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 11:34:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-07 11:34:35,772 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-07 11:34:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:35,772 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-07 11:34:35,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:34:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-07 11:34:35,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:34:35,774 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:35,774 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:35,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:34:35,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:35,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:35,982 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-07 11:34:35,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:35,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319411777] [2020-07-07 11:34:35,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:35,992 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:35,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [264864971] [2020-07-07 11:34:35,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:36,025 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-07 11:34:36,027 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:36,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319411777] [2020-07-07 11:34:36,140 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:36,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264864971] [2020-07-07 11:34:36,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:36,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-07 11:34:36,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234432266] [2020-07-07 11:34:36,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:34:36,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:36,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:34:36,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:34:36,143 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-07-07 11:34:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:36,224 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-07 11:34:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:34:36,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-07 11:34:36,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:36,226 INFO L225 Difference]: With dead ends: 32 [2020-07-07 11:34:36,226 INFO L226 Difference]: Without dead ends: 29 [2020-07-07 11:34:36,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:34:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-07 11:34:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-07 11:34:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:34:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-07-07 11:34:36,236 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2020-07-07 11:34:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:36,236 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-07-07 11:34:36,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:34:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-07-07 11:34:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:34:36,237 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:36,237 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:36,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:36,452 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:36,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:36,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-07-07 11:34:36,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:36,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716908207] [2020-07-07 11:34:36,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:36,459 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:36,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393350731] [2020-07-07 11:34:36,460 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:36,531 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:34:36,531 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:36,533 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-07 11:34:36,536 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:40,954 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 13 [2020-07-07 11:34:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-07 11:34:41,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716908207] [2020-07-07 11:34:41,076 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:41,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393350731] [2020-07-07 11:34:41,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:41,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-07 11:34:41,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093811549] [2020-07-07 11:34:41,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:34:41,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:34:41,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=70, Unknown=1, NotChecked=0, Total=90 [2020-07-07 11:34:41,080 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 10 states. [2020-07-07 11:34:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:56,946 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-07-07 11:34:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:34:56,947 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-07 11:34:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:56,948 INFO L225 Difference]: With dead ends: 39 [2020-07-07 11:34:56,948 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 11:34:56,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2020-07-07 11:34:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 11:34:56,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-07 11:34:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-07 11:34:56,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-07-07 11:34:56,960 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 24 [2020-07-07 11:34:56,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:56,960 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-07-07 11:34:56,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:34:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-07-07 11:34:56,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 11:34:56,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:56,962 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:57,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:57,163 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:57,164 INFO L82 PathProgramCache]: Analyzing trace with hash -854689591, now seen corresponding path program 1 times [2020-07-07 11:34:57,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:57,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173819980] [2020-07-07 11:34:57,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:57,171 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:57,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451656906] [2020-07-07 11:34:57,171 INFO L94 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 [2020-07-07 11:34:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:57,199 INFO L264 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-07 11:34:57,201 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:57,271 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-07 11:34:57,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173819980] [2020-07-07 11:34:57,329 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:57,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451656906] [2020-07-07 11:34:57,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:57,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-07 11:34:57,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473741189] [2020-07-07 11:34:57,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:34:57,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:57,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:34:57,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:34:57,332 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 7 states. [2020-07-07 11:34:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:59,623 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-07-07 11:34:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:34:59,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-07-07 11:34:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:59,627 INFO L225 Difference]: With dead ends: 41 [2020-07-07 11:34:59,627 INFO L226 Difference]: Without dead ends: 34 [2020-07-07 11:34:59,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:34:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-07 11:34:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-07-07 11:34:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-07 11:34:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-07-07 11:34:59,636 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 30 [2020-07-07 11:34:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:59,636 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-07-07 11:34:59,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:34:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-07-07 11:34:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 11:34:59,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:59,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:59,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:59,846 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-07-07 11:34:59,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:59,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057905598] [2020-07-07 11:34:59,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:59,854 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:59,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261723888] [2020-07-07 11:34:59,855 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:59,911 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-07 11:34:59,911 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:59,913 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-07 11:34:59,915 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:02,148 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:35:22,254 WARN L193 SmtUtils]: Spent 12.63 s on a formula simplification that was a NOOP. DAG size: 23 [2020-07-07 11:35:22,257 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:35:47,370 WARN L193 SmtUtils]: Spent 14.10 s on a formula simplification that was a NOOP. DAG size: 23 [2020-07-07 11:35:49,453 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:35:57,715 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~y~0_13 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_13 Int)) (let ((.cse0 (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_13))) (and (not (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6) .cse0) (+ v_main_~z~0_BEFORE_CALL_6 (* v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_13)))) (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6) v_main_~x~0_13) (+ .cse0 1))))) is different from false [2020-07-07 11:35:59,725 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~y~0_13 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_13 Int)) (let ((.cse0 (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_13))) (and (not (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6) .cse0) (+ v_main_~z~0_BEFORE_CALL_6 (* v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_13)))) (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6) v_main_~x~0_13) (+ .cse0 1))))) is different from true [2020-07-07 11:35:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-07 11:35:59,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057905598] [2020-07-07 11:35:59,730 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:35:59,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261723888] [2020-07-07 11:35:59,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:35:59,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-07 11:35:59,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694264227] [2020-07-07 11:35:59,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:35:59,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:35:59,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:35:59,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=4, NotChecked=12, Total=72 [2020-07-07 11:35:59,733 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 9 states. [2020-07-07 11:36:03,936 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 26 DAG size of output: 3 [2020-07-07 11:36:12,204 WARN L193 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 32 DAG size of output: 6 [2020-07-07 11:37:49,377 WARN L193 SmtUtils]: Spent 1.27 m on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2020-07-07 11:37:55,722 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 21 [2020-07-07 11:38:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:38:01,796 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-07 11:38:01,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:38:01,856 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-07-07 11:38:01,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:38:01,857 INFO L225 Difference]: With dead ends: 34 [2020-07-07 11:38:01,857 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:38:01,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 146.9s TimeCoverageRelationStatistics Valid=36, Invalid=90, Unknown=10, NotChecked=20, Total=156 [2020-07-07 11:38:01,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:38:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:38:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:38:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:38:01,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-07 11:38:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:38:01,859 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:38:01,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:38:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:38:01,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:38:02,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-07 11:38:02,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:38:21,676 WARN L193 SmtUtils]: Spent 19.55 s on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2020-07-07 11:38:24,919 WARN L193 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2020-07-07 11:38:28,530 WARN L193 SmtUtils]: Spent 3.60 s on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2020-07-07 11:38:28,535 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:38:28,535 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:38:28,535 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:38:28,535 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:38:28,536 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:38:28,536 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:38:28,536 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2020-07-07 11:38:28,536 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-07-07 11:38:28,536 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-07-07 11:38:28,536 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-07-07 11:38:28,537 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (or (and (= 1 main_~x~0) (= 1 main_~y~0)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_13 Int)) (let ((.cse1 (+ (* main_~z~0 v_main_~x~0_13) 1)) (.cse0 (* main_~z~0 v_main_~y~0_13))) (and (= main_~y~0 .cse0) (= .cse1 main_~x~0) (= .cse1 (+ .cse0 v_main_~x~0_13)))))) [2020-07-07 11:38:28,537 INFO L268 CegarLoopResult]: For program point L32-1(lines 31 40) no Hoare annotation was computed. [2020-07-07 11:38:28,537 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 43) the Hoare annotation is: true [2020-07-07 11:38:28,537 INFO L264 CegarLoopResult]: At program point L31-2(lines 31 40) the Hoare annotation is: (or (and (= 1 main_~x~0) (= 1 main_~y~0)) (exists ((v_main_~y~0_13 Int) (v_main_~x~0_13 Int)) (let ((.cse1 (+ (* main_~z~0 v_main_~x~0_13) 1)) (.cse0 (* main_~z~0 v_main_~y~0_13))) (and (= main_~y~0 .cse0) (= .cse1 main_~x~0) (= .cse1 (+ .cse0 v_main_~x~0_13)))))) [2020-07-07 11:38:28,537 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))) [2020-07-07 11:38:28,538 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 43) no Hoare annotation was computed. [2020-07-07 11:38:28,538 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 21 43) no Hoare annotation was computed. [2020-07-07 11:38:28,538 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-07-07 11:38:28,538 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2020-07-07 11:38:28,538 INFO L268 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-07-07 11:38:28,538 INFO L268 CegarLoopResult]: For program point L13(lines 13 16) no Hoare annotation was computed. [2020-07-07 11:38:28,538 INFO L268 CegarLoopResult]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2020-07-07 11:38:28,539 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-07-07 11:38:28,539 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-07-07 11:38:28,550 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:28,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:28,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:28,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:28,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:38:28 BoogieIcfgContainer [2020-07-07 11:38:28,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:38:28,566 INFO L168 Benchmark]: Toolchain (without parser) took 234195.28 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 101.3 MB in the beginning and 100.3 MB in the end (delta: 989.2 kB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:28,567 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:38:28,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.55 ms. Allocated memory is still 144.7 MB. Free memory was 101.1 MB in the beginning and 91.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:28,569 INFO L168 Benchmark]: Boogie Preprocessor took 110.43 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 91.5 MB in the beginning and 180.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:28,569 INFO L168 Benchmark]: RCFGBuilder took 400.72 ms. Allocated memory is still 200.8 MB. Free memory was 180.0 MB in the beginning and 167.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:28,570 INFO L168 Benchmark]: TraceAbstraction took 233386.11 ms. Allocated memory was 200.8 MB in the beginning and 233.8 MB in the end (delta: 33.0 MB). Free memory was 167.3 MB in the beginning and 100.3 MB in the end (delta: 67.0 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:28,575 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.55 ms. Allocated memory is still 144.7 MB. Free memory was 101.1 MB in the beginning and 91.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.43 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 91.5 MB in the beginning and 180.0 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 400.72 ms. Allocated memory is still 200.8 MB. Free memory was 180.0 MB in the beginning and 167.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233386.11 ms. Allocated memory was 200.8 MB in the beginning and 233.8 MB in the end (delta: 33.0 MB). Free memory was 167.3 MB in the beginning and 100.3 MB in the end (delta: 67.0 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] * 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 [2020-07-07 11:38:28,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:28,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:28,601 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,601 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:28,601 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,602 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] [2020-07-07 11:38:28,602 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:28,602 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_13,QUANTIFIED] Derived loop invariant: (1 == x && 1 == y) || (\exists v_main_~y~0_13 : int, v_main_~x~0_13 : int :: (y == z * v_main_~y~0_13 && z * v_main_~x~0_13 + 1 == x) && z * v_main_~x~0_13 + 1 == z * v_main_~y~0_13 + v_main_~x~0_13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 206.8s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 140.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 26.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 50 SDslu, 252 SDs, 0 SdLazy, 179 SolverSat, 11 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 33.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 151.6s 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, 92 HoareAnnotationTreeSize, 16 FomulaSimplifications, 222 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 104 FormulaSimplificationTreeSizeReductionInter, 26.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 64.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 5 QuantifiedInterpolants, 11441 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...