/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 23:37:42,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 23:37:42,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 23:37:42,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 23:37:42,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 23:37:42,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 23:37:42,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 23:37:42,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 23:37:42,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 23:37:42,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 23:37:42,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 23:37:42,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 23:37:42,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 23:37:42,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 23:37:42,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 23:37:42,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 23:37:42,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 23:37:42,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 23:37:42,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 23:37:42,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 23:37:42,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 23:37:42,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 23:37:42,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 23:37:42,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 23:37:42,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 23:37:42,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-08 23:37:42,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-08 23:37:42,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-08 23:37:42,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-08 23:37:42,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-08 23:37:42,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-08 23:37:42,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-08 23:37:42,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-08 23:37:42,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 23:37:42,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 23:37:42,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 23:37:42,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 23:37:42,707 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 23:37:42,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 23:37:42,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 23:37:42,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 23:37:42,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 23:37:42,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 23:37:42,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 23:37:42,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 23:37:42,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 23:37:42,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 23:37:42,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 23:37:42,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 23:37:42,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 23:37:42,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 23:37:42,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 23:37:42,715 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 23:37:42,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 23:37:42,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 23:37:42,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 23:37:42,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 23:37:42,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 23:37:42,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 23:37:42,717 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-08 23:37:42,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 23:37:43,012 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 23:37:43,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 23:37:43,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 23:37:43,017 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 23:37:43,018 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-08 23:37:43,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e790f220/c760ef335de94bde854680ef6eca6b96/FLAGb2a8d393e [2020-07-08 23:37:43,505 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 23:37:43,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-08 23:37:43,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e790f220/c760ef335de94bde854680ef6eca6b96/FLAGb2a8d393e [2020-07-08 23:37:43,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e790f220/c760ef335de94bde854680ef6eca6b96 [2020-07-08 23:37:43,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 23:37:43,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 23:37:43,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 23:37:43,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 23:37:43,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 23:37:43,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:37:43" (1/1) ... [2020-07-08 23:37:43,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8243f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:43, skipping insertion in model container [2020-07-08 23:37:43,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:37:43" (1/1) ... [2020-07-08 23:37:43,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 23:37:43,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 23:37:44,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:37:44,115 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 23:37:44,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:37:44,153 INFO L208 MainTranslator]: Completed translation [2020-07-08 23:37:44,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44 WrapperNode [2020-07-08 23:37:44,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 23:37:44,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 23:37:44,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 23:37:44,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 23:37:44,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (1/1) ... [2020-07-08 23:37:44,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (1/1) ... [2020-07-08 23:37:44,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (1/1) ... [2020-07-08 23:37:44,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (1/1) ... [2020-07-08 23:37:44,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (1/1) ... [2020-07-08 23:37:44,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (1/1) ... [2020-07-08 23:37:44,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (1/1) ... [2020-07-08 23:37:44,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 23:37:44,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 23:37:44,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 23:37:44,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 23:37:44,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (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 [2020-07-08 23:37:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 23:37:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 23:37:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-08 23:37:44,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 23:37:44,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 23:37:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 23:37:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-08 23:37:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-08 23:37:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-08 23:37:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 23:37:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 23:37:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 23:37:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 23:37:44,766 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 23:37:44,767 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 23:37:44,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:37:44 BoogieIcfgContainer [2020-07-08 23:37:44,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 23:37:44,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 23:37:44,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 23:37:44,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 23:37:44,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 11:37:43" (1/3) ... [2020-07-08 23:37:44,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecd2525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:37:44, skipping insertion in model container [2020-07-08 23:37:44,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:44" (2/3) ... [2020-07-08 23:37:44,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecd2525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:37:44, skipping insertion in model container [2020-07-08 23:37:44,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:37:44" (3/3) ... [2020-07-08 23:37:44,778 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2020-07-08 23:37:44,789 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 23:37:44,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 23:37:44,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 23:37:44,834 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 23:37:44,834 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 23:37:44,834 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-08 23:37:44,834 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 23:37:44,835 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 23:37:44,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 23:37:44,835 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 23:37:44,835 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 23:37:44,848 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-08 23:37:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-08 23:37:44,857 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:37:44,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:37:44,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:37:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:37:44,865 INFO L82 PathProgramCache]: Analyzing trace with hash 31250732, now seen corresponding path program 1 times [2020-07-08 23:37:44,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:37:44,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649186520] [2020-07-08 23:37:44,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:37:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:37:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:37:44,987 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-08 23:37:44,988 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID [2020-07-08 23:37:44,989 INFO L263 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {29#true} is VALID [2020-07-08 23:37:44,990 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-08 23:37:44,990 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID [2020-07-08 23:37:44,990 INFO L263 TraceCheckUtils]: 3: Hoare triple {29#true} call #t~ret2 := main(); {29#true} is VALID [2020-07-08 23:37:44,990 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} ~x~0 := 1; {29#true} is VALID [2020-07-08 23:37:44,991 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} ~y~0 := #t~nondet0; {29#true} is VALID [2020-07-08 23:37:44,991 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#true} havoc #t~nondet0; {29#true} is VALID [2020-07-08 23:37:44,992 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#true} assume !!(~y~0 % 4294967296 > 0); {29#true} is VALID [2020-07-08 23:37:44,993 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-08 23:37:44,993 INFO L263 TraceCheckUtils]: 9: Hoare triple {30#false} call __VERIFIER_assert((if ~x~0 % 4294967296 == ~y~0 % 4294967296 then 1 else 0)); {30#false} is VALID [2020-07-08 23:37:44,993 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#false} ~cond := #in~cond; {30#false} is VALID [2020-07-08 23:37:44,994 INFO L280 TraceCheckUtils]: 11: Hoare triple {30#false} assume 0 == ~cond; {30#false} is VALID [2020-07-08 23:37:44,994 INFO L280 TraceCheckUtils]: 12: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-08 23:37:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 23:37:44,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649186520] [2020-07-08 23:37:44,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:37:44,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-08 23:37:44,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643453131] [2020-07-08 23:37:45,005 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-08 23:37:45,007 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:37:45,011 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-08 23:37:45,054 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:37:45,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-08 23:37:45,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:37:45,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-08 23:37:45,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-08 23:37:45,065 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-08 23:37:45,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:37:45,173 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-08 23:37:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-08 23:37:45,175 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-08 23:37:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:37:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 23:37:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2020-07-08 23:37:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-08 23:37:45,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2020-07-08 23:37:45,191 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 42 transitions. [2020-07-08 23:37:45,290 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:37:45,304 INFO L225 Difference]: With dead ends: 37 [2020-07-08 23:37:45,305 INFO L226 Difference]: Without dead ends: 19 [2020-07-08 23:37:45,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-08 23:37:45,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-08 23:37:45,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-08 23:37:45,396 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:37:45,397 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-08 23:37:45,397 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-08 23:37:45,398 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-08 23:37:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:37:45,405 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-08 23:37:45,405 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-08 23:37:45,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:37:45,406 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:37:45,406 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-08 23:37:45,407 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-08 23:37:45,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:37:45,417 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-08 23:37:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-08 23:37:45,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:37:45,418 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:37:45,419 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:37:45,419 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:37:45,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-08 23:37:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-08 23:37:45,429 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2020-07-08 23:37:45,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:37:45,430 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-08 23:37:45,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-08 23:37:45,430 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 20 transitions. [2020-07-08 23:37:45,474 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:37:45,474 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-08 23:37:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-08 23:37:45,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:37:45,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:37:45,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 23:37:45,476 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:37:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:37:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash 18321438, now seen corresponding path program 1 times [2020-07-08 23:37:45,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:37:45,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961334145] [2020-07-08 23:37:45,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:37:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:37:45,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 23:37:45,552 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:799) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:883) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-08 23:37:45,558 INFO L168 Benchmark]: Toolchain (without parser) took 1662.00 ms. Allocated memory was 145.2 MB in the beginning and 204.5 MB in the end (delta: 59.2 MB). Free memory was 103.5 MB in the beginning and 116.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:45,559 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 23:37:45,560 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.04 ms. Allocated memory is still 145.2 MB. Free memory was 103.3 MB in the beginning and 93.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:45,561 INFO L168 Benchmark]: Boogie Preprocessor took 42.83 ms. Allocated memory is still 145.2 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:45,562 INFO L168 Benchmark]: RCFGBuilder took 572.50 ms. Allocated memory was 145.2 MB in the beginning and 204.5 MB in the end (delta: 59.2 MB). Free memory was 91.8 MB in the beginning and 166.3 MB in the end (delta: -74.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:45,563 INFO L168 Benchmark]: TraceAbstraction took 783.53 ms. Allocated memory is still 204.5 MB. Free memory was 165.6 MB in the beginning and 116.2 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:45,567 INFO L336 ainManager$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 145.2 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.04 ms. Allocated memory is still 145.2 MB. Free memory was 103.3 MB in the beginning and 93.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.83 ms. Allocated memory is still 145.2 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 572.50 ms. Allocated memory was 145.2 MB in the beginning and 204.5 MB in the end (delta: 59.2 MB). Free memory was 91.8 MB in the beginning and 166.3 MB in the end (delta: -74.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 783.53 ms. Allocated memory is still 204.5 MB. Free memory was 165.6 MB in the beginning and 116.2 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...