/usr/bin/java -ea -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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:25:55,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:25:55,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:25:55,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:25:55,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:25:55,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:25:55,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:25:55,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:25:55,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:25:55,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:25:55,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:25:55,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:25:55,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:25:55,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:25:55,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:25:55,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:25:55,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:25:55,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:25:55,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:25:55,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:25:55,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:25:55,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:25:55,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:25:55,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:25:55,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 20:25:55,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:25:55,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:25:55,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:25:55,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 20:25:55,468 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:25:55,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:25:55,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:25:55,471 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:25:55,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:25:55,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:25:55,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:25:55,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:25:55,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:25:55,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:25:55,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:25:55,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:25:55,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:25:55,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:25:55,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:25:55,475 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:25:55,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:25:55,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:25:55,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:25:55,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:25:55,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:25:55,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:25:55,476 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:25:55,754 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:25:55,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:25:55,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:25:55,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:25:55,773 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:25:55,774 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-07-10 20:25:55,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008102986/73566b01932a45a481caf475b6469f24/FLAGddf0a27e0 [2020-07-10 20:25:56,397 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:25:56,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-07-10 20:25:56,405 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008102986/73566b01932a45a481caf475b6469f24/FLAGddf0a27e0 [2020-07-10 20:25:56,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/008102986/73566b01932a45a481caf475b6469f24 [2020-07-10 20:25:56,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:25:56,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:25:56,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:25:56,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:25:56,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:25:56,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:25:56" (1/1) ... [2020-07-10 20:25:56,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb3c551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:56, skipping insertion in model container [2020-07-10 20:25:56,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:25:56" (1/1) ... [2020-07-10 20:25:56,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:25:56,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:25:57,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:25:57,118 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:25:57,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:25:57,166 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:25:57,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57 WrapperNode [2020-07-10 20:25:57,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:25:57,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:25:57,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:25:57,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:25:57,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (1/1) ... [2020-07-10 20:25:57,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (1/1) ... [2020-07-10 20:25:57,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (1/1) ... [2020-07-10 20:25:57,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (1/1) ... [2020-07-10 20:25:57,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (1/1) ... [2020-07-10 20:25:57,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (1/1) ... [2020-07-10 20:25:57,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (1/1) ... [2020-07-10 20:25:57,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:25:57,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:25:57,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:25:57,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:25:57,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (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 [2020-07-10 20:25:57,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-10 20:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:25:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:25:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:25:57,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 20:25:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 20:25:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-10 20:25:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:25:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:25:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:25:57,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:25:57,720 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:25:57,721 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:25:57,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:25:57 BoogieIcfgContainer [2020-07-10 20:25:57,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:25:57,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:25:57,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:25:57,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:25:57,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:25:56" (1/3) ... [2020-07-10 20:25:57,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2f2744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:25:57, skipping insertion in model container [2020-07-10 20:25:57,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:25:57" (2/3) ... [2020-07-10 20:25:57,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2f2744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:25:57, skipping insertion in model container [2020-07-10 20:25:57,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:25:57" (3/3) ... [2020-07-10 20:25:57,753 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2020-07-10 20:25:57,781 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:25:57,793 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:25:57,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:25:57,844 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:25:57,845 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:25:57,845 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:25:57,845 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:25:57,845 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:25:57,846 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:25:57,846 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:25:57,846 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:25:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-07-10 20:25:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-10 20:25:57,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:25:57,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:25:57,877 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:25:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:25:57,882 INFO L82 PathProgramCache]: Analyzing trace with hash 754575313, now seen corresponding path program 1 times [2020-07-10 20:25:57,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:25:57,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973731260] [2020-07-10 20:25:57,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:25:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:58,135 INFO L280 TraceCheckUtils]: 0: Hoare triple {49#true} assume true; {49#true} is VALID [2020-07-10 20:25:58,136 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {49#true} {49#true} #73#return; {49#true} is VALID [2020-07-10 20:25:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:58,175 INFO L280 TraceCheckUtils]: 0: Hoare triple {49#true} ~cond := #in~cond; {49#true} is VALID [2020-07-10 20:25:58,176 INFO L280 TraceCheckUtils]: 1: Hoare triple {49#true} assume !(0 == ~cond); {49#true} is VALID [2020-07-10 20:25:58,176 INFO L280 TraceCheckUtils]: 2: Hoare triple {49#true} assume true; {49#true} is VALID [2020-07-10 20:25:58,177 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {49#true} {49#true} #77#return; {49#true} is VALID [2020-07-10 20:25:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:25:58,185 INFO L280 TraceCheckUtils]: 0: Hoare triple {49#true} ~cond := #in~cond; {49#true} is VALID [2020-07-10 20:25:58,186 INFO L280 TraceCheckUtils]: 1: Hoare triple {49#true} assume !(0 == ~cond); {49#true} is VALID [2020-07-10 20:25:58,186 INFO L280 TraceCheckUtils]: 2: Hoare triple {49#true} assume true; {49#true} is VALID [2020-07-10 20:25:58,187 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {49#true} {49#true} #79#return; {49#true} is VALID [2020-07-10 20:25:58,187 INFO L263 TraceCheckUtils]: 0: Hoare triple {49#true} call ULTIMATE.init(); {49#true} is VALID [2020-07-10 20:25:58,188 INFO L280 TraceCheckUtils]: 1: Hoare triple {49#true} assume true; {49#true} is VALID [2020-07-10 20:25:58,188 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {49#true} {49#true} #73#return; {49#true} is VALID [2020-07-10 20:25:58,189 INFO L263 TraceCheckUtils]: 3: Hoare triple {49#true} call #t~ret2 := main(); {49#true} is VALID [2020-07-10 20:25:58,189 INFO L280 TraceCheckUtils]: 4: Hoare triple {49#true} havoc ~x1~0; {49#true} is VALID [2020-07-10 20:25:58,190 INFO L280 TraceCheckUtils]: 5: Hoare triple {49#true} havoc ~x2~0; {49#true} is VALID [2020-07-10 20:25:58,190 INFO L280 TraceCheckUtils]: 6: Hoare triple {49#true} havoc ~y1~0; {49#true} is VALID [2020-07-10 20:25:58,190 INFO L280 TraceCheckUtils]: 7: Hoare triple {49#true} havoc ~y2~0; {49#true} is VALID [2020-07-10 20:25:58,191 INFO L280 TraceCheckUtils]: 8: Hoare triple {49#true} havoc ~y3~0; {49#true} is VALID [2020-07-10 20:25:58,191 INFO L280 TraceCheckUtils]: 9: Hoare triple {49#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {49#true} is VALID [2020-07-10 20:25:58,192 INFO L280 TraceCheckUtils]: 10: Hoare triple {49#true} ~x1~0 := #t~nondet0; {49#true} is VALID [2020-07-10 20:25:58,192 INFO L280 TraceCheckUtils]: 11: Hoare triple {49#true} havoc #t~nondet0; {49#true} is VALID [2020-07-10 20:25:58,192 INFO L280 TraceCheckUtils]: 12: Hoare triple {49#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {49#true} is VALID [2020-07-10 20:25:58,193 INFO L280 TraceCheckUtils]: 13: Hoare triple {49#true} ~x2~0 := #t~nondet1; {49#true} is VALID [2020-07-10 20:25:58,193 INFO L280 TraceCheckUtils]: 14: Hoare triple {49#true} havoc #t~nondet1; {49#true} is VALID [2020-07-10 20:25:58,194 INFO L263 TraceCheckUtils]: 15: Hoare triple {49#true} call assume_abort_if_not((if ~x1~0 >= 0 then 1 else 0)); {49#true} is VALID [2020-07-10 20:25:58,194 INFO L280 TraceCheckUtils]: 16: Hoare triple {49#true} ~cond := #in~cond; {49#true} is VALID [2020-07-10 20:25:58,194 INFO L280 TraceCheckUtils]: 17: Hoare triple {49#true} assume !(0 == ~cond); {49#true} is VALID [2020-07-10 20:25:58,195 INFO L280 TraceCheckUtils]: 18: Hoare triple {49#true} assume true; {49#true} is VALID [2020-07-10 20:25:58,195 INFO L275 TraceCheckUtils]: 19: Hoare quadruple {49#true} {49#true} #77#return; {49#true} is VALID [2020-07-10 20:25:58,196 INFO L263 TraceCheckUtils]: 20: Hoare triple {49#true} call assume_abort_if_not((if 0 != ~x2~0 then 1 else 0)); {49#true} is VALID [2020-07-10 20:25:58,196 INFO L280 TraceCheckUtils]: 21: Hoare triple {49#true} ~cond := #in~cond; {49#true} is VALID [2020-07-10 20:25:58,196 INFO L280 TraceCheckUtils]: 22: Hoare triple {49#true} assume !(0 == ~cond); {49#true} is VALID [2020-07-10 20:25:58,197 INFO L280 TraceCheckUtils]: 23: Hoare triple {49#true} assume true; {49#true} is VALID [2020-07-10 20:25:58,197 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {49#true} {49#true} #79#return; {49#true} is VALID [2020-07-10 20:25:58,198 INFO L280 TraceCheckUtils]: 25: Hoare triple {49#true} ~y1~0 := 0; {49#true} is VALID [2020-07-10 20:25:58,198 INFO L280 TraceCheckUtils]: 26: Hoare triple {49#true} ~y2~0 := 0; {49#true} is VALID [2020-07-10 20:25:58,198 INFO L280 TraceCheckUtils]: 27: Hoare triple {49#true} ~y3~0 := ~x1~0; {49#true} is VALID [2020-07-10 20:25:58,200 INFO L280 TraceCheckUtils]: 28: Hoare triple {49#true} assume false; {50#false} is VALID [2020-07-10 20:25:58,201 INFO L263 TraceCheckUtils]: 29: Hoare triple {50#false} call __VERIFIER_assert((if ~y1~0 * ~x2~0 + ~y2~0 == ~x1~0 then 1 else 0)); {50#false} is VALID [2020-07-10 20:25:58,201 INFO L280 TraceCheckUtils]: 30: Hoare triple {50#false} ~cond := #in~cond; {50#false} is VALID [2020-07-10 20:25:58,201 INFO L280 TraceCheckUtils]: 31: Hoare triple {50#false} assume 0 == ~cond; {50#false} is VALID [2020-07-10 20:25:58,202 INFO L280 TraceCheckUtils]: 32: Hoare triple {50#false} assume !false; {50#false} is VALID [2020-07-10 20:25:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-10 20:25:58,211 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:25:58,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973731260] [2020-07-10 20:25:58,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:25:58,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 20:25:58,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795292312] [2020-07-10 20:25:58,225 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-07-10 20:25:58,228 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:25:58,233 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 20:25:58,290 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:25:58,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 20:25:58,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:25:58,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 20:25:58,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:25:58,303 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2020-07-10 20:25:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:58,445 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2020-07-10 20:25:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 20:25:58,445 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-07-10 20:25:58,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:25:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:25:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 93 transitions. [2020-07-10 20:25:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:25:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 93 transitions. [2020-07-10 20:25:58,466 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 93 transitions. [2020-07-10 20:25:58,621 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 93 edges. 93 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:25:58,634 INFO L225 Difference]: With dead ends: 76 [2020-07-10 20:25:58,635 INFO L226 Difference]: Without dead ends: 40 [2020-07-10 20:25:58,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:25:58,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-10 20:25:58,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-10 20:25:58,713 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:25:58,713 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand 40 states. [2020-07-10 20:25:58,714 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand 40 states. [2020-07-10 20:25:58,714 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 40 states. [2020-07-10 20:25:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:58,721 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-07-10 20:25:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-07-10 20:25:58,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:25:58,722 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:25:58,723 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand 40 states. [2020-07-10 20:25:58,723 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 40 states. [2020-07-10 20:25:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:25:58,728 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-07-10 20:25:58,729 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-07-10 20:25:58,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:25:58,730 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:25:58,730 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:25:58,730 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:25:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-10 20:25:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-07-10 20:25:58,736 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 33 [2020-07-10 20:25:58,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:25:58,736 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-07-10 20:25:58,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 20:25:58,737 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 40 states and 43 transitions. [2020-07-10 20:25:58,795 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:25:58,795 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-07-10 20:25:58,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-10 20:25:58,797 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:25:58,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:25:58,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:25:58,798 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:25:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:25:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash 756362773, now seen corresponding path program 1 times [2020-07-10 20:25:58,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:25:58,799 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421005109] [2020-07-10 20:25:58,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:25:58,826 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:25:58,826 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-10 20:25:58,826 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 20:25:58,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:25:58,851 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 20:25:58,852 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:25:58,852 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:25:58,852 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-10 20:25:58,852 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 20:25:58,852 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 20:25:58,852 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 20:25:58,853 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:25:58,854 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:25:58,854 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-10 20:25:58,855 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-10 20:25:58,855 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 20:25:58,855 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-10 20:25:58,855 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-10 20:25:58,855 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 20:25:58,855 WARN L170 areAnnotationChecker]: L11-1 has no Hoare annotation [2020-07-10 20:25:58,855 WARN L170 areAnnotationChecker]: L11-3 has no Hoare annotation [2020-07-10 20:25:58,856 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-10 20:25:58,856 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-10 20:25:58,856 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-10 20:25:58,856 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-10 20:25:58,856 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2020-07-10 20:25:58,856 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2020-07-10 20:25:58,857 WARN L170 areAnnotationChecker]: L22-1 has no Hoare annotation [2020-07-10 20:25:58,857 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 20:25:58,857 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 20:25:58,857 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2020-07-10 20:25:58,857 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2020-07-10 20:25:58,857 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-10 20:25:58,857 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2020-07-10 20:25:58,858 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2020-07-10 20:25:58,858 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2020-07-10 20:25:58,858 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2020-07-10 20:25:58,858 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-10 20:25:58,858 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-10 20:25:58,858 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2020-07-10 20:25:58,858 WARN L170 areAnnotationChecker]: L33-2 has no Hoare annotation [2020-07-10 20:25:58,858 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-10 20:25:58,859 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-10 20:25:58,859 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 20:25:58,859 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-10 20:25:58,859 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-10 20:25:58,859 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-10 20:25:58,859 WARN L170 areAnnotationChecker]: L43 has no Hoare annotation [2020-07-10 20:25:58,859 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 20:25:58,860 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-10 20:25:58,860 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-10 20:25:58,860 WARN L170 areAnnotationChecker]: L38-2 has no Hoare annotation [2020-07-10 20:25:58,860 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-10 20:25:58,861 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-10 20:25:58,861 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-10 20:25:58,861 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-10 20:25:58,861 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-10 20:25:58,861 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-10 20:25:58,861 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-10 20:25:58,862 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-10 20:25:58,862 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2020-07-10 20:25:58,862 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-10 20:25:58,862 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-10 20:25:58,862 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 20:25:58,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 08:25:58 BoogieIcfgContainer [2020-07-10 20:25:58,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 20:25:58,873 INFO L168 Benchmark]: Toolchain (without parser) took 2043.67 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 103.1 MB in the beginning and 188.5 MB in the end (delta: -85.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:58,875 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 20:25:58,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.01 ms. Allocated memory is still 139.5 MB. Free memory was 102.9 MB in the beginning and 92.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:58,878 INFO L168 Benchmark]: Boogie Preprocessor took 153.48 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 92.8 MB in the beginning and 182.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:58,879 INFO L168 Benchmark]: RCFGBuilder took 412.86 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 161.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:58,881 INFO L168 Benchmark]: TraceAbstraction took 1129.51 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 161.2 MB in the beginning and 188.5 MB in the end (delta: -27.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-07-10 20:25:58,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.01 ms. Allocated memory is still 139.5 MB. Free memory was 102.9 MB in the beginning and 92.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.48 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 92.8 MB in the beginning and 182.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 412.86 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 161.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1129.51 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 161.2 MB in the beginning and 188.5 MB in the end (delta: -27.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int x1, x2; [L22] int y1, y2, y3; [L23] x1 = __VERIFIER_nondet_int() [L24] x2 = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(x1 >= 0) [L11] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x1 >= 0) [L27] CALL assume_abort_if_not(x2 != 0) [L11] COND FALSE !(!cond) [L27] RET assume_abort_if_not(x2 != 0) [L29] y1 = 0 [L30] y2 = 0 [L31] y3 = x1 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L14] COND TRUE !(cond) [L16] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 incorrect! Received shutdown request...