/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/geo2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 00:50:44,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 00:50:44,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 00:50:44,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 00:50:44,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 00:50:44,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 00:50:44,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 00:50:44,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 00:50:44,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 00:50:44,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 00:50:44,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 00:50:44,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 00:50:44,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 00:50:44,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 00:50:44,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 00:50:44,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 00:50:44,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 00:50:44,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 00:50:44,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 00:50:44,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 00:50:44,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 00:50:44,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 00:50:44,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 00:50:44,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 00:50:44,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 00:50:44,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 00:50:44,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 00:50:44,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 00:50:44,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-18 00:50:44,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 00:50:44,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 00:50:44,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 00:50:44,781 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 00:50:44,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 00:50:44,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 00:50:44,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 00:50:44,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 00:50:44,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 00:50:44,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 00:50:44,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 00:50:44,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 00:50:44,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 00:50:44,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 00:50:44,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 00:50:44,785 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 00:50:44,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 00:50:44,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 00:50:44,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 00:50:44,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 00:50:44,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 00:50:44,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 00:50:44,786 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-18 00:50:45,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 00:50:45,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 00:50:45,056 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 00:50:45,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 00:50:45,058 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 00:50:45,058 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo2.c [2020-07-18 00:50:45,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569f1bdc5/385d51cea62b4bd4a458e8f9f6bc316a/FLAG183b3048b [2020-07-18 00:50:45,571 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 00:50:45,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo2.c [2020-07-18 00:50:45,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569f1bdc5/385d51cea62b4bd4a458e8f9f6bc316a/FLAG183b3048b [2020-07-18 00:50:45,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/569f1bdc5/385d51cea62b4bd4a458e8f9f6bc316a [2020-07-18 00:50:45,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 00:50:45,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 00:50:45,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 00:50:45,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 00:50:45,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 00:50:45,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:50:45" (1/1) ... [2020-07-18 00:50:45,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5274753a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:45, skipping insertion in model container [2020-07-18 00:50:45,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:50:45" (1/1) ... [2020-07-18 00:50:45,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 00:50:45,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 00:50:46,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:50:46,170 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 00:50:46,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 00:50:46,213 INFO L208 MainTranslator]: Completed translation [2020-07-18 00:50:46,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46 WrapperNode [2020-07-18 00:50:46,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 00:50:46,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 00:50:46,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 00:50:46,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 00:50:46,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (1/1) ... [2020-07-18 00:50:46,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (1/1) ... [2020-07-18 00:50:46,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (1/1) ... [2020-07-18 00:50:46,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (1/1) ... [2020-07-18 00:50:46,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (1/1) ... [2020-07-18 00:50:46,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (1/1) ... [2020-07-18 00:50:46,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (1/1) ... [2020-07-18 00:50:46,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 00:50:46,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 00:50:46,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 00:50:46,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 00:50:46,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (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 [2020-07-18 00:50:46,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 00:50:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 00:50:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 00:50:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 00:50:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 00:50:46,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 00:50:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 00:50:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 00:50:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 00:50:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 00:50:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 00:50:46,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 00:50:46,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 00:50:46,661 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 00:50:46,661 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 00:50:46,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:50:46 BoogieIcfgContainer [2020-07-18 00:50:46,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 00:50:46,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 00:50:46,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 00:50:46,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 00:50:46,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:50:45" (1/3) ... [2020-07-18 00:50:46,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190c4142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:50:46, skipping insertion in model container [2020-07-18 00:50:46,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:50:46" (2/3) ... [2020-07-18 00:50:46,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190c4142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:50:46, skipping insertion in model container [2020-07-18 00:50:46,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:50:46" (3/3) ... [2020-07-18 00:50:46,675 INFO L109 eAbstractionObserver]: Analyzing ICFG geo2.c [2020-07-18 00:50:46,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 00:50:46,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 00:50:46,707 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 00:50:46,729 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 00:50:46,729 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 00:50:46,730 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-18 00:50:46,730 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 00:50:46,730 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 00:50:46,730 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 00:50:46,730 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 00:50:46,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 00:50:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-18 00:50:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-18 00:50:46,769 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:50:46,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:50:46,770 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:50:46,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:50:46,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1095395545, now seen corresponding path program 1 times [2020-07-18 00:50:46,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:50:46,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040534658] [2020-07-18 00:50:46,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:50:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 00:50:46,949 INFO L280 TraceCheckUtils]: 0: Hoare triple {39#true} assume true; {39#true} is VALID [2020-07-18 00:50:46,950 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {39#true} {39#true} #63#return; {39#true} is VALID [2020-07-18 00:50:46,952 INFO L263 TraceCheckUtils]: 0: Hoare triple {39#true} call ULTIMATE.init(); {39#true} is VALID [2020-07-18 00:50:46,954 INFO L280 TraceCheckUtils]: 1: Hoare triple {39#true} assume true; {39#true} is VALID [2020-07-18 00:50:46,954 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {39#true} {39#true} #63#return; {39#true} is VALID [2020-07-18 00:50:46,954 INFO L263 TraceCheckUtils]: 3: Hoare triple {39#true} call #t~ret2 := main(); {39#true} is VALID [2020-07-18 00:50:46,955 INFO L280 TraceCheckUtils]: 4: Hoare triple {39#true} havoc ~z~0; {39#true} is VALID [2020-07-18 00:50:46,955 INFO L280 TraceCheckUtils]: 5: Hoare triple {39#true} havoc ~k~0; {39#true} is VALID [2020-07-18 00:50:46,955 INFO L280 TraceCheckUtils]: 6: Hoare triple {39#true} havoc ~x~0; {39#true} is VALID [2020-07-18 00:50:46,956 INFO L280 TraceCheckUtils]: 7: Hoare triple {39#true} havoc ~y~0; {39#true} is VALID [2020-07-18 00:50:46,956 INFO L280 TraceCheckUtils]: 8: Hoare triple {39#true} havoc ~c~0; {39#true} is VALID [2020-07-18 00:50:46,958 INFO L280 TraceCheckUtils]: 9: Hoare triple {39#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {39#true} is VALID [2020-07-18 00:50:46,959 INFO L280 TraceCheckUtils]: 10: Hoare triple {39#true} ~z~0 := #t~nondet0; {39#true} is VALID [2020-07-18 00:50:46,959 INFO L280 TraceCheckUtils]: 11: Hoare triple {39#true} havoc #t~nondet0; {39#true} is VALID [2020-07-18 00:50:46,959 INFO L280 TraceCheckUtils]: 12: Hoare triple {39#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {39#true} is VALID [2020-07-18 00:50:46,960 INFO L280 TraceCheckUtils]: 13: Hoare triple {39#true} ~k~0 := #t~nondet1; {39#true} is VALID [2020-07-18 00:50:46,960 INFO L280 TraceCheckUtils]: 14: Hoare triple {39#true} havoc #t~nondet1; {39#true} is VALID [2020-07-18 00:50:46,961 INFO L280 TraceCheckUtils]: 15: Hoare triple {39#true} ~x~0 := 1; {39#true} is VALID [2020-07-18 00:50:46,961 INFO L280 TraceCheckUtils]: 16: Hoare triple {39#true} ~y~0 := 1; {39#true} is VALID [2020-07-18 00:50:46,964 INFO L280 TraceCheckUtils]: 17: Hoare triple {39#true} ~c~0 := 1; {39#true} is VALID [2020-07-18 00:50:46,968 INFO L280 TraceCheckUtils]: 18: Hoare triple {39#true} assume false; {40#false} is VALID [2020-07-18 00:50:46,968 INFO L263 TraceCheckUtils]: 19: Hoare triple {40#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 * ~z~0 - ~x~0 - ~z~0 * ~y~0 then 1 else 0)); {40#false} is VALID [2020-07-18 00:50:46,969 INFO L280 TraceCheckUtils]: 20: Hoare triple {40#false} ~cond := #in~cond; {40#false} is VALID [2020-07-18 00:50:46,969 INFO L280 TraceCheckUtils]: 21: Hoare triple {40#false} assume 0 == ~cond; {40#false} is VALID [2020-07-18 00:50:46,970 INFO L280 TraceCheckUtils]: 22: Hoare triple {40#false} assume !false; {40#false} is VALID [2020-07-18 00:50:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-18 00:50:46,975 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:50:46,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040534658] [2020-07-18 00:50:46,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 00:50:46,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 00:50:46,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382447869] [2020-07-18 00:50:46,986 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-18 00:50:46,989 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 00:50:46,993 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 00:50:47,037 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:47,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 00:50:47,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 00:50:47,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 00:50:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 00:50:47,049 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-07-18 00:50:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:47,156 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-07-18 00:50:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 00:50:47,157 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-18 00:50:47,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 00:50:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:50:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2020-07-18 00:50:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 00:50:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2020-07-18 00:50:47,176 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 64 transitions. [2020-07-18 00:50:47,280 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:47,291 INFO L225 Difference]: With dead ends: 54 [2020-07-18 00:50:47,291 INFO L226 Difference]: Without dead ends: 31 [2020-07-18 00:50:47,295 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 [2020-07-18 00:50:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-18 00:50:47,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-18 00:50:47,349 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 00:50:47,349 INFO L82 GeneralOperation]: Start isEquivalent. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:47,350 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:47,350 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:47,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:47,356 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-18 00:50:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-07-18 00:50:47,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:50:47,357 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:50:47,357 INFO L74 IsIncluded]: Start isIncluded. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:47,358 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 31 states. [2020-07-18 00:50:47,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 00:50:47,362 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-07-18 00:50:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-07-18 00:50:47,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 00:50:47,364 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 00:50:47,364 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 00:50:47,364 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 00:50:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-18 00:50:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-07-18 00:50:47,369 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 23 [2020-07-18 00:50:47,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 00:50:47,370 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-07-18 00:50:47,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 00:50:47,370 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 31 states and 32 transitions. [2020-07-18 00:50:47,424 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 00:50:47,424 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-07-18 00:50:47,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-18 00:50:47,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 00:50:47,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 00:50:47,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 00:50:47,426 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 00:50:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 00:50:47,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1093608085, now seen corresponding path program 1 times [2020-07-18 00:50:47,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 00:50:47,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570055898] [2020-07-18 00:50:47,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 00:50:47,439 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-18 00:50:47,440 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-07-18 00:50:47,440 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 00:50:47,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 00:50:47,458 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 00:50:47,458 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:50:47,459 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 00:50:47,459 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-18 00:50:47,459 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 00:50:47,459 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-18 00:50:47,459 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 00:50:47,460 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:50:47,460 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 00:50:47,460 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:50:47,460 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-18 00:50:47,460 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-18 00:50:47,461 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-18 00:50:47,461 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-18 00:50:47,461 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 00:50:47,461 WARN L170 areAnnotationChecker]: L10-1 has no Hoare annotation [2020-07-18 00:50:47,461 WARN L170 areAnnotationChecker]: L10-3 has no Hoare annotation [2020-07-18 00:50:47,461 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-18 00:50:47,462 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-18 00:50:47,462 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-18 00:50:47,462 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2020-07-18 00:50:47,462 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-18 00:50:47,462 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:50:47,462 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 00:50:47,463 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-18 00:50:47,463 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2020-07-18 00:50:47,463 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2020-07-18 00:50:47,463 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-18 00:50:47,463 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2020-07-18 00:50:47,463 WARN L170 areAnnotationChecker]: L31-3 has no Hoare annotation [2020-07-18 00:50:47,464 WARN L170 areAnnotationChecker]: L31-3 has no Hoare annotation [2020-07-18 00:50:47,464 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-18 00:50:47,464 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 00:50:47,464 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-18 00:50:47,464 WARN L170 areAnnotationChecker]: L38 has no Hoare annotation [2020-07-18 00:50:47,464 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 00:50:47,465 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2020-07-18 00:50:47,465 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-18 00:50:47,465 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-18 00:50:47,465 WARN L170 areAnnotationChecker]: L31-2 has no Hoare annotation [2020-07-18 00:50:47,465 WARN L170 areAnnotationChecker]: L31-2 has no Hoare annotation [2020-07-18 00:50:47,465 WARN L170 areAnnotationChecker]: L31-2 has no Hoare annotation [2020-07-18 00:50:47,466 WARN L170 areAnnotationChecker]: L25-1 has no Hoare annotation [2020-07-18 00:50:47,466 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-18 00:50:47,466 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2020-07-18 00:50:47,466 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-18 00:50:47,466 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-18 00:50:47,466 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-18 00:50:47,467 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-18 00:50:47,467 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. [2020-07-18 00:50:47,470 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-18 00:50:47,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 12:50:47 BoogieIcfgContainer [2020-07-18 00:50:47,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 00:50:47,474 INFO L168 Benchmark]: Toolchain (without parser) took 1518.94 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.8 MB in the beginning and 97.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 63.8 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:47,475 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 00:50:47,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.07 ms. Allocated memory is still 146.3 MB. Free memory was 103.6 MB in the beginning and 93.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:47,477 INFO L168 Benchmark]: Boogie Preprocessor took 29.81 ms. Allocated memory is still 146.3 MB. Free memory was 93.6 MB in the beginning and 92.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:47,478 INFO L168 Benchmark]: RCFGBuilder took 421.91 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 164.1 MB in the end (delta: -72.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:47,479 INFO L168 Benchmark]: TraceAbstraction took 803.32 ms. Allocated memory is still 203.4 MB. Free memory was 163.5 MB in the beginning and 97.1 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2020-07-18 00:50:47,483 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 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.07 ms. Allocated memory is still 146.3 MB. Free memory was 103.6 MB in the beginning and 93.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.81 ms. Allocated memory is still 146.3 MB. Free memory was 93.6 MB in the beginning and 92.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.91 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 164.1 MB in the end (delta: -72.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 803.32 ms. Allocated memory is still 203.4 MB. Free memory was 163.5 MB in the beginning and 97.1 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int z, k; [L23] int x, y, c; [L24] z = __VERIFIER_nondet_int() [L25] k = __VERIFIER_nondet_int() [L27] x = 1 [L28] y = 1 [L29] c = 1 [L31] COND TRUE 1 [L32] CALL __VERIFIER_assert(1 + x*z - x - z*y == 0) [L13] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 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=36occurred 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...