/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 0.1.25-267fbe0 [2020-07-18 06:35:00,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:35:00,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:35:00,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:35:00,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:35:00,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:35:00,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:35:00,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:35:00,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:35:00,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:35:00,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:35:00,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:35:00,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:35:00,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:35:00,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:35:00,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:35:00,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:35:00,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:35:00,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:35:00,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:35:00,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:35:00,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:35:00,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:35:00,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:35:00,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 06:35:00,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-18 06:35:00,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-18 06:35:00,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-18 06:35:00,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-18 06:35:00,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-18 06:35:00,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-18 06:35:00,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-18 06:35:00,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-18 06:35:00,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:35:00,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:35:00,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:35:00,891 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 06:35:00,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:35:00,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:35:00,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:35:00,904 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:35:00,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:35:00,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:35:00,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:35:00,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:35:00,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:35:00,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:35:00,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:35:00,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:35:00,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:35:00,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:35:00,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:35:00,907 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:35:00,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:35:00,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:35:00,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:35:00,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:35:00,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:35:00,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:35:00,908 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 [2020-07-18 06:35:01,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:35:01,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:35:01,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:35:01,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:35:01,238 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:35:01,239 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-18 06:35:01,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/136c04e52/865c1169dd954063ba75c456521892fa/FLAGdb71543a6 [2020-07-18 06:35:01,910 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:35:01,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-2.c [2020-07-18 06:35:01,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/136c04e52/865c1169dd954063ba75c456521892fa/FLAGdb71543a6 [2020-07-18 06:35:02,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/136c04e52/865c1169dd954063ba75c456521892fa [2020-07-18 06:35:02,237 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:35:02,241 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:35:02,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:35:02,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:35:02,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:35:02,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@367d8e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02, skipping insertion in model container [2020-07-18 06:35:02,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:35:02,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:35:02,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:35:02,546 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:35:02,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:35:02,587 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:35:02,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02 WrapperNode [2020-07-18 06:35:02,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:35:02,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:35:02,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:35:02,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:35:02,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (1/1) ... [2020-07-18 06:35:02,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:35:02,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:35:02,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:35:02,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:35:02,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (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 06:35:02,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:35:02,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:35:02,822 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-18 06:35:02,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 06:35:02,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:35:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:35:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-18 06:35:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-18 06:35:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-18 06:35:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:35:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:35:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:35:02,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:35:03,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:35:03,164 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 06:35:03,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:35:03 BoogieIcfgContainer [2020-07-18 06:35:03,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:35:03,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:35:03,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:35:03,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:35:03,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:35:02" (1/3) ... [2020-07-18 06:35:03,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d860ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:35:03, skipping insertion in model container [2020-07-18 06:35:03,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:35:02" (2/3) ... [2020-07-18 06:35:03,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d860ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:35:03, skipping insertion in model container [2020-07-18 06:35:03,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:35:03" (3/3) ... [2020-07-18 06:35:03,182 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-2.c [2020-07-18 06:35:03,196 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:35:03,205 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:35:03,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:35:03,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:35:03,253 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:35:03,253 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:35:03,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:35:03,254 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:35:03,254 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:35:03,254 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:35:03,255 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:35:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-18 06:35:03,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-18 06:35:03,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:35:03,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:35:03,288 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:35:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:35:03,296 INFO L82 PathProgramCache]: Analyzing trace with hash 31250732, now seen corresponding path program 1 times [2020-07-18 06:35:03,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:35:03,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669324283] [2020-07-18 06:35:03,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:35:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:35:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:35:03,475 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-18 06:35:03,476 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID [2020-07-18 06:35:03,479 INFO L263 TraceCheckUtils]: 0: Hoare triple {29#true} call ULTIMATE.init(); {29#true} is VALID [2020-07-18 06:35:03,480 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#true} assume true; {29#true} is VALID [2020-07-18 06:35:03,480 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {29#true} {29#true} #57#return; {29#true} is VALID [2020-07-18 06:35:03,481 INFO L263 TraceCheckUtils]: 3: Hoare triple {29#true} call #t~ret2 := main(); {29#true} is VALID [2020-07-18 06:35:03,481 INFO L280 TraceCheckUtils]: 4: Hoare triple {29#true} ~x~0 := 1; {29#true} is VALID [2020-07-18 06:35:03,482 INFO L280 TraceCheckUtils]: 5: Hoare triple {29#true} ~y~0 := #t~nondet0; {29#true} is VALID [2020-07-18 06:35:03,482 INFO L280 TraceCheckUtils]: 6: Hoare triple {29#true} havoc #t~nondet0; {29#true} is VALID [2020-07-18 06:35:03,483 INFO L280 TraceCheckUtils]: 7: Hoare triple {29#true} assume !!(~y~0 % 4294967296 > 0); {29#true} is VALID [2020-07-18 06:35:03,488 INFO L280 TraceCheckUtils]: 8: Hoare triple {29#true} assume !true; {30#false} is VALID [2020-07-18 06:35:03,489 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 [2020-07-18 06:35:03,489 INFO L280 TraceCheckUtils]: 10: Hoare triple {30#false} ~cond := #in~cond; {30#false} is VALID [2020-07-18 06:35:03,490 INFO L280 TraceCheckUtils]: 11: Hoare triple {30#false} assume 0 == ~cond; {30#false} is VALID [2020-07-18 06:35:03,490 INFO L280 TraceCheckUtils]: 12: Hoare triple {30#false} assume !false; {30#false} is VALID [2020-07-18 06:35:03,496 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 06:35:03,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669324283] [2020-07-18 06:35:03,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:35:03,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-18 06:35:03,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929326804] [2020-07-18 06:35:03,515 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-18 06:35:03,521 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:35:03,526 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-18 06:35:03,616 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:35:03,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-18 06:35:03,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:35:03,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-18 06:35:03,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-18 06:35:03,634 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-18 06:35:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:35:03,757 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-18 06:35:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-18 06:35:03,757 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-18 06:35:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:35:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 06:35:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2020-07-18 06:35:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-18 06:35:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 42 transitions. [2020-07-18 06:35:03,779 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 42 transitions. [2020-07-18 06:35:03,875 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:35:03,890 INFO L225 Difference]: With dead ends: 37 [2020-07-18 06:35:03,891 INFO L226 Difference]: Without dead ends: 19 [2020-07-18 06:35:03,896 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 [2020-07-18 06:35:03,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-18 06:35:03,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-18 06:35:03,963 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:35:03,964 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:03,965 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:03,965 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:35:03,971 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-18 06:35:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 06:35:03,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:35:03,972 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:35:03,973 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:03,973 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-18 06:35:03,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:35:03,978 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-07-18 06:35:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 06:35:03,979 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:35:03,979 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:35:03,980 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:35:03,980 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:35:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-18 06:35:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-18 06:35:03,986 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2020-07-18 06:35:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:35:03,987 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-18 06:35:03,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-18 06:35:03,987 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 20 transitions. [2020-07-18 06:35:04,029 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:35:04,030 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-18 06:35:04,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-18 06:35:04,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:35:04,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:35:04,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:35:04,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:35:04,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:35:04,033 INFO L82 PathProgramCache]: Analyzing trace with hash 18321438, now seen corresponding path program 1 times [2020-07-18 06:35:04,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:35:04,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408247974] [2020-07-18 06:35:04,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:35:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:35:04,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 06:35:04,131 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:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-18 06:35:04,139 INFO L168 Benchmark]: Toolchain (without parser) took 1899.01 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 102.5 MB in the beginning and 113.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:04,141 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-18 06:35:04,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.66 ms. Allocated memory is still 137.4 MB. Free memory was 102.3 MB in the beginning and 92.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:04,143 INFO L168 Benchmark]: Boogie Preprocessor took 154.28 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 92.5 MB in the beginning and 181.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:04,145 INFO L168 Benchmark]: RCFGBuilder took 426.80 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 163.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:04,146 INFO L168 Benchmark]: TraceAbstraction took 963.65 ms. Allocated memory is still 202.9 MB. Free memory was 163.2 MB in the beginning and 113.7 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-07-18 06:35:04,150 INFO L336 ainManager$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 0.28 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.66 ms. Allocated memory is still 137.4 MB. Free memory was 102.3 MB in the beginning and 92.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.28 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 92.5 MB in the beginning and 181.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.80 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 163.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 963.65 ms. Allocated memory is still 202.9 MB. Free memory was 163.2 MB in the beginning and 113.7 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...