/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/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-18 06:34:29,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-18 06:34:29,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-18 06:34:29,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-18 06:34:29,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-18 06:34:29,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-18 06:34:29,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-18 06:34:29,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-18 06:34:29,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-18 06:34:29,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-18 06:34:29,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-18 06:34:29,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-18 06:34:29,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-18 06:34:29,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-18 06:34:29,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-18 06:34:29,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-18 06:34:29,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-18 06:34:29,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-18 06:34:29,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-18 06:34:29,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-18 06:34:29,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-18 06:34:29,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-18 06:34:29,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-18 06:34:29,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-18 06:34:29,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-18 06:34:29,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-18 06:34:29,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-18 06:34:29,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-18 06:34:29,848 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 06:34:29,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-18 06:34:29,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-18 06:34:29,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-18 06:34:29,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-18 06:34:29,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-18 06:34:29,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-18 06:34:29,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-18 06:34:29,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-18 06:34:29,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-18 06:34:29,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-18 06:34:29,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-18 06:34:29,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-18 06:34:29,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-18 06:34:29,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-18 06:34:29,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-18 06:34:29,862 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-18 06:34:29,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-18 06:34:29,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-18 06:34:29,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-18 06:34:29,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-18 06:34:29,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-18 06:34:29,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-18 06:34:29,863 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 06:34:30,133 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-18 06:34:30,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-18 06:34:30,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-18 06:34:30,157 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-18 06:34:30,158 INFO L275 PluginConnector]: CDTParser initialized [2020-07-18 06:34:30,158 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2020-07-18 06:34:30,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f828d396/fab771bec51042468fcef19a13ad3a0a/FLAG228284c24 [2020-07-18 06:34:30,731 INFO L306 CDTParser]: Found 1 translation units. [2020-07-18 06:34:30,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c [2020-07-18 06:34:30,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f828d396/fab771bec51042468fcef19a13ad3a0a/FLAG228284c24 [2020-07-18 06:34:31,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f828d396/fab771bec51042468fcef19a13ad3a0a [2020-07-18 06:34:31,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-18 06:34:31,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-18 06:34:31,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-18 06:34:31,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-18 06:34:31,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-18 06:34:31,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4466b720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31, skipping insertion in model container [2020-07-18 06:34:31,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-18 06:34:31,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-18 06:34:31,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:34:31,331 INFO L203 MainTranslator]: Completed pre-run [2020-07-18 06:34:31,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-18 06:34:31,367 INFO L208 MainTranslator]: Completed translation [2020-07-18 06:34:31,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31 WrapperNode [2020-07-18 06:34:31,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-18 06:34:31,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-18 06:34:31,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-18 06:34:31,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-18 06:34:31,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (1/1) ... [2020-07-18 06:34:31,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-18 06:34:31,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-18 06:34:31,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-18 06:34:31,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-18 06:34:31,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (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 06:34:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-18 06:34:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-18 06:34:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-18 06:34:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-18 06:34:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-18 06:34:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-18 06:34:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-18 06:34:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-18 06:34:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-18 06:34:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-18 06:34:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-18 06:34:31,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-18 06:34:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-18 06:34:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-18 06:34:31,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-18 06:34:31,869 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-18 06:34:31,870 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-18 06:34:31,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:34:31 BoogieIcfgContainer [2020-07-18 06:34:31,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-18 06:34:31,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-18 06:34:31,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-18 06:34:31,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-18 06:34:31,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 06:34:31" (1/3) ... [2020-07-18 06:34:31,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5053966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:34:31, skipping insertion in model container [2020-07-18 06:34:31,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 06:34:31" (2/3) ... [2020-07-18 06:34:31,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5053966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 06:34:31, skipping insertion in model container [2020-07-18 06:34:31,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 06:34:31" (3/3) ... [2020-07-18 06:34:31,884 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-07-18 06:34:31,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-18 06:34:31,904 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-18 06:34:31,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-18 06:34:31,947 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-18 06:34:31,947 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-18 06:34:31,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-18 06:34:31,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-18 06:34:31,948 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-18 06:34:31,948 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-18 06:34:31,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-18 06:34:31,948 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-18 06:34:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-18 06:34:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-18 06:34:31,978 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:34:31,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:34:31,981 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:34:31,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:34:31,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2009717658, now seen corresponding path program 1 times [2020-07-18 06:34:31,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:34:31,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541801037] [2020-07-18 06:34:31,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:34:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:34:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-18 06:34:32,226 INFO L280 TraceCheckUtils]: 0: Hoare triple {45#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {38#true} is VALID [2020-07-18 06:34:32,227 INFO L280 TraceCheckUtils]: 1: Hoare triple {38#true} #valid := #valid[0 := 0]; {38#true} is VALID [2020-07-18 06:34:32,227 INFO L280 TraceCheckUtils]: 2: Hoare triple {38#true} assume 0 < #StackHeapBarrier; {38#true} is VALID [2020-07-18 06:34:32,228 INFO L280 TraceCheckUtils]: 3: Hoare triple {38#true} assume true; {38#true} is VALID [2020-07-18 06:34:32,228 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {38#true} {38#true} #49#return; {38#true} is VALID [2020-07-18 06:34:32,232 INFO L263 TraceCheckUtils]: 0: Hoare triple {38#true} call ULTIMATE.init(); {45#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-18 06:34:32,232 INFO L280 TraceCheckUtils]: 1: Hoare triple {45#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {38#true} is VALID [2020-07-18 06:34:32,232 INFO L280 TraceCheckUtils]: 2: Hoare triple {38#true} #valid := #valid[0 := 0]; {38#true} is VALID [2020-07-18 06:34:32,233 INFO L280 TraceCheckUtils]: 3: Hoare triple {38#true} assume 0 < #StackHeapBarrier; {38#true} is VALID [2020-07-18 06:34:32,233 INFO L280 TraceCheckUtils]: 4: Hoare triple {38#true} assume true; {38#true} is VALID [2020-07-18 06:34:32,234 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {38#true} {38#true} #49#return; {38#true} is VALID [2020-07-18 06:34:32,234 INFO L263 TraceCheckUtils]: 6: Hoare triple {38#true} call #t~ret4 := main(); {38#true} is VALID [2020-07-18 06:34:32,235 INFO L280 TraceCheckUtils]: 7: Hoare triple {38#true} SUMMARY for call ~#x~0.base, ~#x~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {38#true} is VALID [2020-07-18 06:34:32,235 INFO L280 TraceCheckUtils]: 8: Hoare triple {38#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {38#true} is VALID [2020-07-18 06:34:32,235 INFO L280 TraceCheckUtils]: 9: Hoare triple {38#true} SUMMARY for call write~init~int(#t~nondet0, ~#x~0.base, ~#x~0.offset, 4); srcloc: L13-1 {38#true} is VALID [2020-07-18 06:34:32,236 INFO L280 TraceCheckUtils]: 10: Hoare triple {38#true} havoc #t~nondet0; {38#true} is VALID [2020-07-18 06:34:32,236 INFO L280 TraceCheckUtils]: 11: Hoare triple {38#true} ~p~0.base, ~p~0.offset := ~#x~0.base, ~#x~0.offset; {38#true} is VALID [2020-07-18 06:34:32,237 INFO L280 TraceCheckUtils]: 12: Hoare triple {38#true} assume !true; {39#false} is VALID [2020-07-18 06:34:32,238 INFO L263 TraceCheckUtils]: 13: Hoare triple {39#false} call __VERIFIER_assert(0); {39#false} is VALID [2020-07-18 06:34:32,238 INFO L280 TraceCheckUtils]: 14: Hoare triple {39#false} ~cond := #in~cond; {39#false} is VALID [2020-07-18 06:34:32,239 INFO L280 TraceCheckUtils]: 15: Hoare triple {39#false} assume 0 == ~cond; {39#false} is VALID [2020-07-18 06:34:32,239 INFO L280 TraceCheckUtils]: 16: Hoare triple {39#false} assume !false; {39#false} is VALID [2020-07-18 06:34:32,242 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 06:34:32,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541801037] [2020-07-18 06:34:32,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-18 06:34:32,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-18 06:34:32,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539398349] [2020-07-18 06:34:32,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-18 06:34:32,258 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-18 06:34:32,262 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-18 06:34:32,312 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:32,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-18 06:34:32,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-18 06:34:32,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-18 06:34:32,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-18 06:34:32,323 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-07-18 06:34:32,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:32,565 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-07-18 06:34:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-18 06:34:32,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-18 06:34:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-18 06:34:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 06:34:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2020-07-18 06:34:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-18 06:34:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2020-07-18 06:34:32,586 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 52 transitions. [2020-07-18 06:34:32,663 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:32,675 INFO L225 Difference]: With dead ends: 49 [2020-07-18 06:34:32,675 INFO L226 Difference]: Without dead ends: 26 [2020-07-18 06:34:32,679 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 [2020-07-18 06:34:32,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-18 06:34:32,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-18 06:34:32,750 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-18 06:34:32,751 INFO L82 GeneralOperation]: Start isEquivalent. First operand 26 states. Second operand 26 states. [2020-07-18 06:34:32,752 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-18 06:34:32,752 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-18 06:34:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:32,757 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-18 06:34:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-18 06:34:32,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:34:32,758 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:34:32,758 INFO L74 IsIncluded]: Start isIncluded. First operand 26 states. Second operand 26 states. [2020-07-18 06:34:32,758 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 26 states. [2020-07-18 06:34:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-18 06:34:32,763 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-18 06:34:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-18 06:34:32,764 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-18 06:34:32,764 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-18 06:34:32,765 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-18 06:34:32,765 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-18 06:34:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-18 06:34:32,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-18 06:34:32,770 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2020-07-18 06:34:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-18 06:34:32,771 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-18 06:34:32,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-18 06:34:32,771 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 26 states and 26 transitions. [2020-07-18 06:34:32,811 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-18 06:34:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-18 06:34:32,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-18 06:34:32,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-18 06:34:32,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-18 06:34:32,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-18 06:34:32,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-18 06:34:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-18 06:34:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1896871379, now seen corresponding path program 1 times [2020-07-18 06:34:32,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-18 06:34:32,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031692025] [2020-07-18 06:34:32,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-18 06:34:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 06:34:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-18 06:34:32,896 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-18 06:34:32,896 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-18 06:34:32,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-18 06:34:32,926 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-18 06:34:32,927 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 06:34:32,927 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-18 06:34:32,927 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-18 06:34:32,927 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-18 06:34:32,927 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 06:34:32,927 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 06:34:32,928 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-18 06:34:32,928 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-18 06:34:32,928 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 06:34:32,928 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-18 06:34:32,928 WARN L170 areAnnotationChecker]: L-1-1 has no Hoare annotation [2020-07-18 06:34:32,928 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-18 06:34:32,928 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-18 06:34:32,929 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 06:34:32,929 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-18 06:34:32,929 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-18 06:34:32,929 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-18 06:34:32,929 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2020-07-18 06:34:32,929 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-18 06:34:32,930 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-18 06:34:32,930 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-18 06:34:32,930 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-18 06:34:32,930 WARN L170 areAnnotationChecker]: L16-5 has no Hoare annotation [2020-07-18 06:34:32,930 WARN L170 areAnnotationChecker]: L16-5 has no Hoare annotation [2020-07-18 06:34:32,930 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-18 06:34:32,930 WARN L170 areAnnotationChecker]: L16-6 has no Hoare annotation [2020-07-18 06:34:32,930 WARN L170 areAnnotationChecker]: L16-6 has no Hoare annotation [2020-07-18 06:34:32,931 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-18 06:34:32,931 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-18 06:34:32,931 WARN L170 areAnnotationChecker]: L13-4 has no Hoare annotation [2020-07-18 06:34:32,931 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-18 06:34:32,931 WARN L170 areAnnotationChecker]: L16-4 has no Hoare annotation [2020-07-18 06:34:32,931 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-18 06:34:32,931 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-18 06:34:32,932 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-18 06:34:32,932 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-18 06:34:32,932 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-18 06:34:32,932 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-18 06:34:32,932 WARN L170 areAnnotationChecker]: L17-4 has no Hoare annotation [2020-07-18 06:34:32,932 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-18 06:34:32,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.07 06:34:32 BoogieIcfgContainer [2020-07-18 06:34:32,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-18 06:34:32,940 INFO L168 Benchmark]: Toolchain (without parser) took 1836.00 ms. Allocated memory was 144.2 MB in the beginning and 232.8 MB in the end (delta: 88.6 MB). Free memory was 101.5 MB in the beginning and 198.9 MB in the end (delta: -97.4 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:32,941 INFO L168 Benchmark]: CDTParser took 1.06 ms. Allocated memory is still 144.2 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-18 06:34:32,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.16 ms. Allocated memory is still 144.2 MB. Free memory was 101.1 MB in the beginning and 91.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:32,943 INFO L168 Benchmark]: Boogie Preprocessor took 130.06 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.1 MB in the beginning and 180.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:32,944 INFO L168 Benchmark]: RCFGBuilder took 376.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 160.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:32,945 INFO L168 Benchmark]: TraceAbstraction took 1059.97 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 160.2 MB in the beginning and 200.4 MB in the end (delta: -40.2 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-07-18 06:34:32,949 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 1.06 ms. Allocated memory is still 144.2 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.16 ms. Allocated memory is still 144.2 MB. Free memory was 101.1 MB in the beginning and 91.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.06 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.1 MB in the beginning and 180.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.1 MB in the beginning and 160.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1059.97 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 160.2 MB in the beginning and 200.4 MB in the end (delta: -40.2 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); VAL [x={2:0}] [L13] int x=__VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=100, x={2:0}] [L14] int *p = &x; VAL [p={2:0}, x={2:0}] [L16] EXPR \read(x) VAL [\read(x)=100, p={2:0}, x={2:0}] [L16] COND FALSE !(x<100) VAL [\read(x)=100, p={2:0}, x={2:0}] [L19] CALL __VERIFIER_assert(0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 23 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...