/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/loops/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:22:15,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:22:15,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:22:15,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:22:15,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:22:15,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:22:15,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:22:15,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:22:15,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:22:15,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:22:15,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:22:15,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:22:15,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:22:15,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:22:15,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:22:15,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:22:15,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:22:15,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:22:15,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:22:15,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:22:15,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:22:15,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:22:15,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:22:15,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:22:15,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-10 20:22:15,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-10 20:22:15,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-10 20:22:15,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-10 20:22:15,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-10 20:22:15,749 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-10 20:22:15,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 20:22:15,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 20:22:15,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 20:22:15,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 20:22:15,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 20:22:15,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 20:22:15,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 20:22:15,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 20:22:15,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:22:15,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:22:15,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:22:15,758 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 20:22:15,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:22:15,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:22:15,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:22:15,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:22:15,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:22:15,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:22:15,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:22:15,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:22:15,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:22:15,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:22:15,771 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:22:15,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:22:15,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:22:15,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:22:15,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:22:15,772 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:22:15,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:22:15,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:22:15,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:22:15,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:22:15,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:22:15,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:22:15,774 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:22:16,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:22:16,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:22:16,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:22:16,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:22:16,166 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:22:16,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2020-07-10 20:22:16,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0320f83ac/87c343bce14a45db97339efd105ef788/FLAGe8eece5c0 [2020-07-10 20:22:16,736 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:22:16,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2020-07-10 20:22:16,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0320f83ac/87c343bce14a45db97339efd105ef788/FLAGe8eece5c0 [2020-07-10 20:22:17,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0320f83ac/87c343bce14a45db97339efd105ef788 [2020-07-10 20:22:17,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:22:17,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:22:17,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:17,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:22:17,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:22:17,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39032579 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17, skipping insertion in model container [2020-07-10 20:22:17,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:22:17,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:22:17,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:17,349 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:22:17,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:17,385 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:22:17,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17 WrapperNode [2020-07-10 20:22:17,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:17,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:22:17,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:22:17,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:22:17,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (1/1) ... [2020-07-10 20:22:17,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:22:17,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:22:17,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:22:17,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:22:17,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (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 20:22:17,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:22:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:22:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:22:17,629 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-10 20:22:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:22:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:22:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:22:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-10 20:22:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 20:22:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-10 20:22:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:22:17,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:22:17,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:22:17,899 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:22:17,900 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:22:17,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:17 BoogieIcfgContainer [2020-07-10 20:22:17,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:22:17,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:22:17,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:22:17,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:22:17,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:22:17" (1/3) ... [2020-07-10 20:22:17,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7569a772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:17, skipping insertion in model container [2020-07-10 20:22:17,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:17" (2/3) ... [2020-07-10 20:22:17,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7569a772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:17, skipping insertion in model container [2020-07-10 20:22:17,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:17" (3/3) ... [2020-07-10 20:22:17,915 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2020-07-10 20:22:17,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:22:17,937 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:22:17,956 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:22:17,986 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:22:17,987 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:22:17,987 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:22:17,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:22:17,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:22:17,990 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:22:17,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:22:17,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:22:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-10 20:22:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-10 20:22:18,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:18,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:18,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1010422485, now seen corresponding path program 1 times [2020-07-10 20:22:18,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:18,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382802378] [2020-07-10 20:22:18,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:18,271 INFO L280 TraceCheckUtils]: 0: Hoare triple {38#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {33#true} is VALID [2020-07-10 20:22:18,271 INFO L280 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2020-07-10 20:22:18,271 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #48#return; {33#true} is VALID [2020-07-10 20:22:18,275 INFO L263 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {38#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-10 20:22:18,276 INFO L280 TraceCheckUtils]: 1: Hoare triple {38#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {33#true} is VALID [2020-07-10 20:22:18,276 INFO L280 TraceCheckUtils]: 2: Hoare triple {33#true} assume true; {33#true} is VALID [2020-07-10 20:22:18,277 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} #48#return; {33#true} is VALID [2020-07-10 20:22:18,277 INFO L263 TraceCheckUtils]: 4: Hoare triple {33#true} call #t~ret3 := main(); {33#true} is VALID [2020-07-10 20:22:18,278 INFO L280 TraceCheckUtils]: 5: Hoare triple {33#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {33#true} is VALID [2020-07-10 20:22:18,278 INFO L280 TraceCheckUtils]: 6: Hoare triple {33#true} ~x~0 := #t~nondet1; {33#true} is VALID [2020-07-10 20:22:18,279 INFO L280 TraceCheckUtils]: 7: Hoare triple {33#true} havoc #t~nondet1; {33#true} is VALID [2020-07-10 20:22:18,280 INFO L280 TraceCheckUtils]: 8: Hoare triple {33#true} assume !true; {34#false} is VALID [2020-07-10 20:22:18,280 INFO L263 TraceCheckUtils]: 9: Hoare triple {34#false} call __VERIFIER_assert((if ~x~0 <= 0 then 1 else 0)); {34#false} is VALID [2020-07-10 20:22:18,281 INFO L280 TraceCheckUtils]: 10: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2020-07-10 20:22:18,281 INFO L280 TraceCheckUtils]: 11: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2020-07-10 20:22:18,281 INFO L280 TraceCheckUtils]: 12: Hoare triple {34#false} assume !false; {34#false} is VALID [2020-07-10 20:22:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 20:22:18,283 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:18,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382802378] [2020-07-10 20:22:18,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:22:18,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-10 20:22:18,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682949406] [2020-07-10 20:22:18,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-10 20:22:18,298 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:22:18,302 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-10 20:22:18,347 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:18,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-10 20:22:18,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:22:18,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-10 20:22:18,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-10 20:22:18,360 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-07-10 20:22:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:18,549 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-07-10 20:22:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-10 20:22:18,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-10 20:22:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:22:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-10 20:22:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2020-07-10 20:22:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-10 20:22:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2020-07-10 20:22:18,566 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 46 transitions. [2020-07-10 20:22:18,651 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:18,664 INFO L225 Difference]: With dead ends: 41 [2020-07-10 20:22:18,664 INFO L226 Difference]: Without dead ends: 24 [2020-07-10 20:22:18,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-10 20:22:18,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-10 20:22:18,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-10 20:22:18,732 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:22:18,733 INFO L82 GeneralOperation]: Start isEquivalent. First operand 24 states. Second operand 24 states. [2020-07-10 20:22:18,734 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2020-07-10 20:22:18,734 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2020-07-10 20:22:18,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:18,740 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-10 20:22:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-10 20:22:18,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:18,741 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:18,741 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 24 states. [2020-07-10 20:22:18,741 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 24 states. [2020-07-10 20:22:18,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:18,746 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-10 20:22:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-10 20:22:18,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:18,747 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:18,747 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:22:18,748 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:22:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-10 20:22:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-07-10 20:22:18,753 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2020-07-10 20:22:18,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:22:18,753 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-07-10 20:22:18,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-10 20:22:18,754 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 24 states and 26 transitions. [2020-07-10 20:22:18,797 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-07-10 20:22:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-10 20:22:18,799 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:18,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:18,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:22:18,800 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:18,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 997493191, now seen corresponding path program 1 times [2020-07-10 20:22:18,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:18,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363179466] [2020-07-10 20:22:18,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:18,919 INFO L280 TraceCheckUtils]: 0: Hoare triple {227#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {219#true} is VALID [2020-07-10 20:22:18,920 INFO L280 TraceCheckUtils]: 1: Hoare triple {219#true} assume true; {219#true} is VALID [2020-07-10 20:22:18,920 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {219#true} {219#true} #48#return; {219#true} is VALID [2020-07-10 20:22:18,921 INFO L263 TraceCheckUtils]: 0: Hoare triple {219#true} call ULTIMATE.init(); {227#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-10 20:22:18,922 INFO L280 TraceCheckUtils]: 1: Hoare triple {227#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {219#true} is VALID [2020-07-10 20:22:18,922 INFO L280 TraceCheckUtils]: 2: Hoare triple {219#true} assume true; {219#true} is VALID [2020-07-10 20:22:18,922 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {219#true} {219#true} #48#return; {219#true} is VALID [2020-07-10 20:22:18,923 INFO L263 TraceCheckUtils]: 4: Hoare triple {219#true} call #t~ret3 := main(); {219#true} is VALID [2020-07-10 20:22:18,923 INFO L280 TraceCheckUtils]: 5: Hoare triple {219#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {219#true} is VALID [2020-07-10 20:22:18,923 INFO L280 TraceCheckUtils]: 6: Hoare triple {219#true} ~x~0 := #t~nondet1; {219#true} is VALID [2020-07-10 20:22:18,924 INFO L280 TraceCheckUtils]: 7: Hoare triple {219#true} havoc #t~nondet1; {219#true} is VALID [2020-07-10 20:22:18,925 INFO L280 TraceCheckUtils]: 8: Hoare triple {219#true} assume !(~x~0 > 0); {224#(<= ~x~0 0)} is VALID [2020-07-10 20:22:18,926 INFO L263 TraceCheckUtils]: 9: Hoare triple {224#(<= ~x~0 0)} call __VERIFIER_assert((if ~x~0 <= 0 then 1 else 0)); {225#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-10 20:22:18,927 INFO L280 TraceCheckUtils]: 10: Hoare triple {225#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {226#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-10 20:22:18,928 INFO L280 TraceCheckUtils]: 11: Hoare triple {226#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {220#false} is VALID [2020-07-10 20:22:18,928 INFO L280 TraceCheckUtils]: 12: Hoare triple {220#false} assume !false; {220#false} is VALID [2020-07-10 20:22:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 20:22:18,930 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:18,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363179466] [2020-07-10 20:22:18,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:22:18,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-10 20:22:18,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781750633] [2020-07-10 20:22:18,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-10 20:22:18,933 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:22:18,933 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-10 20:22:18,951 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:18,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-10 20:22:18,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:22:18,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-10 20:22:18,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-10 20:22:18,953 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-07-10 20:22:19,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:19,136 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-07-10 20:22:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-10 20:22:19,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-10 20:22:19,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:22:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 20:22:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 26 transitions. [2020-07-10 20:22:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-10 20:22:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 26 transitions. [2020-07-10 20:22:19,143 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 26 transitions. [2020-07-10 20:22:19,176 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:19,177 INFO L225 Difference]: With dead ends: 24 [2020-07-10 20:22:19,177 INFO L226 Difference]: Without dead ends: 0 [2020-07-10 20:22:19,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-10 20:22:19,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-10 20:22:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-10 20:22:19,179 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:22:19,180 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:19,180 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:19,180 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:19,180 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 20:22:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:19,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:19,181 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:19,181 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:19,181 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 20:22:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:19,182 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 20:22:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:19,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:19,182 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:19,183 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:22:19,183 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:22:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-10 20:22:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-10 20:22:19,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-10 20:22:19,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:22:19,184 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-10 20:22:19,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-10 20:22:19,184 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-10 20:22:19,184 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:19,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 20:22:19,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:19,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:22:19,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-10 20:22:19,432 INFO L264 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (<= ~x~0 0) [2020-07-10 20:22:19,432 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-10 20:22:19,433 INFO L264 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (<= ~x~0 0) [2020-07-10 20:22:19,433 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-10 20:22:19,433 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-07-10 20:22:19,433 INFO L271 CegarLoopResult]: At program point fooEXIT(lines 15 17) the Hoare annotation is: true [2020-07-10 20:22:19,433 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 15 17) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-07-10 20:22:19,434 INFO L271 CegarLoopResult]: At program point fooFINAL(lines 15 17) the Hoare annotation is: true [2020-07-10 20:22:19,434 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-10 20:22:19,434 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2020-07-10 20:22:19,434 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-10 20:22:19,434 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-10 20:22:19,435 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 19 27) the Hoare annotation is: true [2020-07-10 20:22:19,435 INFO L271 CegarLoopResult]: At program point L23(lines 23 24) the Hoare annotation is: true [2020-07-10 20:22:19,435 INFO L271 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-07-10 20:22:19,438 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (<= ~x~0 0)) [2020-07-10 20:22:19,438 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 19 27) the Hoare annotation is: true [2020-07-10 20:22:19,438 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 19 27) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (= ~x~0 |old(~x~0)|)) [2020-07-10 20:22:19,438 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-07-10 20:22:19,438 INFO L271 CegarLoopResult]: At program point L24-1(lines 21 25) the Hoare annotation is: true [2020-07-10 20:22:19,439 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-10 20:22:19,439 INFO L271 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true [2020-07-10 20:22:19,439 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (= ~x~0 |old(~x~0)|)) [2020-07-10 20:22:19,439 INFO L271 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-07-10 20:22:19,440 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-10 20:22:19,440 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 3 8) the Hoare annotation is: true [2020-07-10 20:22:19,440 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (<= ~x~0 0))) [2020-07-10 20:22:19,440 INFO L264 CegarLoopResult]: At program point L4(lines 4 6) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond)) (not (<= ~x~0 0))) [2020-07-10 20:22:19,441 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (<= ~x~0 0))) [2020-07-10 20:22:19,441 INFO L271 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2020-07-10 20:22:19,457 INFO L163 areAnnotationChecker]: CFG has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 20:22:19,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 08:22:19 BoogieIcfgContainer [2020-07-10 20:22:19,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 20:22:19,473 INFO L168 Benchmark]: Toolchain (without parser) took 2337.94 ms. Allocated memory was 142.6 MB in the beginning and 230.7 MB in the end (delta: 88.1 MB). Free memory was 108.1 MB in the beginning and 131.9 MB in the end (delta: -23.8 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:19,474 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 142.6 MB. Free memory was 126.0 MB in the beginning and 125.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 20:22:19,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.78 ms. Allocated memory is still 142.6 MB. Free memory was 107.7 MB in the beginning and 98.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:19,477 INFO L168 Benchmark]: Boogie Preprocessor took 146.86 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 98.3 MB in the beginning and 183.8 MB in the end (delta: -85.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:19,478 INFO L168 Benchmark]: RCFGBuilder took 371.96 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 167.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:19,480 INFO L168 Benchmark]: TraceAbstraction took 1560.19 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 166.8 MB in the beginning and 131.9 MB in the end (delta: 34.9 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:19,492 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 142.6 MB. Free memory was 126.0 MB in the beginning and 125.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.78 ms. Allocated memory is still 142.6 MB. Free memory was 107.7 MB in the beginning and 98.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.86 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 98.3 MB in the beginning and 183.8 MB in the end (delta: -85.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.96 ms. Allocated memory is still 204.5 MB. Free memory was 183.8 MB in the beginning and 167.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1560.19 ms. Allocated memory was 204.5 MB in the beginning and 230.7 MB in the end (delta: 26.2 MB). Free memory was 166.8 MB in the beginning and 131.9 MB in the end (delta: 34.9 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 21]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for foo Derived contract for procedure foo: 1 - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 3]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 17 SDslu, 79 SDs, 0 SdLazy, 21 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 41 PreInvPairs, 48 NumberOfFragments, 88 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, 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 correct! Received shutdown request...