/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 19:01:40,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 19:01:40,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 19:01:40,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-10 19:01:40,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 19:01:40,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 19:01:40,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 19:01:40,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 19:01:40,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 19:01:40,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 19:01:40,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 19:01:40,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 19:01:40,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 19:01:40,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 19:01:40,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 19:01:40,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 19:01:40,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 19:01:40,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 19:01:40,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 19:01:40,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 19:01:40,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 19:01:40,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 19:01:40,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 19:01:40,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 19:01:40,572 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 19:01:40,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 19:01:40,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 19:01:40,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 19:01:40,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 19:01:40,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 19:01:40,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 19:01:40,573 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 19:01:40,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 19:01:40,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 19:01:40,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 19:01:40,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 19:01:40,574 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 19:01:40,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 19:01:40,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 19:01:40,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 19:01:40,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 19:01:40,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 19:01:40,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 19:01:40,575 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 19:01:40,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 19:01:40,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 19:01:40,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 19:01:40,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 19:01:40,842 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 19:01:40,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test01.c [2020-07-10 19:01:40,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/624ea73bb/5c98d5939f984c3b993d11fba57fb075/FLAGc02884810 [2020-07-10 19:01:41,312 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 19:01:41,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test01.c [2020-07-10 19:01:41,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/624ea73bb/5c98d5939f984c3b993d11fba57fb075/FLAGc02884810 [2020-07-10 19:01:41,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/624ea73bb/5c98d5939f984c3b993d11fba57fb075 [2020-07-10 19:01:41,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 19:01:41,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 19:01:41,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 19:01:41,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 19:01:41,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 19:01:41,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 07:01:41" (1/1) ... [2020-07-10 19:01:41,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3297cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:41, skipping insertion in model container [2020-07-10 19:01:41,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 07:01:41" (1/1) ... [2020-07-10 19:01:41,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 19:01:41,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 19:01:41,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 19:01:41,985 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 19:01:41,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 19:01:42,018 INFO L208 MainTranslator]: Completed translation [2020-07-10 19:01:42,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42 WrapperNode [2020-07-10 19:01:42,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 19:01:42,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 19:01:42,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 19:01:42,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 19:01:42,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (1/1) ... [2020-07-10 19:01:42,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (1/1) ... [2020-07-10 19:01:42,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (1/1) ... [2020-07-10 19:01:42,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (1/1) ... [2020-07-10 19:01:42,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (1/1) ... [2020-07-10 19:01:42,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (1/1) ... [2020-07-10 19:01:42,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (1/1) ... [2020-07-10 19:01:42,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 19:01:42,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 19:01:42,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 19:01:42,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 19:01:42,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 19:01:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 19:01:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 19:01:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 19:01:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 19:01:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 19:01:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-10 19:01:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-10 19:01:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 19:01:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 19:01:42,507 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 19:01:42,507 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-10 19:01:42,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 07:01:42 BoogieIcfgContainer [2020-07-10 19:01:42,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 19:01:42,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 19:01:42,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 19:01:42,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 19:01:42,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 07:01:41" (1/3) ... [2020-07-10 19:01:42,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0833b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 07:01:42, skipping insertion in model container [2020-07-10 19:01:42,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 07:01:42" (2/3) ... [2020-07-10 19:01:42,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0833b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 07:01:42, skipping insertion in model container [2020-07-10 19:01:42,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 07:01:42" (3/3) ... [2020-07-10 19:01:42,519 INFO L109 eAbstractionObserver]: Analyzing ICFG test01.c [2020-07-10 19:01:42,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 19:01:42,537 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 19:01:42,551 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 19:01:42,572 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 19:01:42,572 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 19:01:42,572 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 19:01:42,572 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 19:01:42,573 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 19:01:42,573 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 19:01:42,573 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 19:01:42,573 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 19:01:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-10 19:01:42,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-10 19:01:42,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 19:01:42,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 19:01:42,598 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 19:01:42,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 19:01:42,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1046102487, now seen corresponding path program 1 times [2020-07-10 19:01:42,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 19:01:42,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038272112] [2020-07-10 19:01:42,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 19:01:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:01:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 19:01:42,924 INFO L280 TraceCheckUtils]: 0: Hoare triple {42#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {31#true} is VALID [2020-07-10 19:01:42,925 INFO L280 TraceCheckUtils]: 1: Hoare triple {31#true} #valid := #valid[0 := 0]; {31#true} is VALID [2020-07-10 19:01:42,925 INFO L280 TraceCheckUtils]: 2: Hoare triple {31#true} assume 0 < #StackHeapBarrier; {31#true} is VALID [2020-07-10 19:01:42,925 INFO L280 TraceCheckUtils]: 3: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-10 19:01:42,926 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {31#true} {31#true} #30#return; {31#true} is VALID [2020-07-10 19:01:42,930 INFO L263 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {42#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-10 19:01:42,930 INFO L280 TraceCheckUtils]: 1: Hoare triple {42#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {31#true} is VALID [2020-07-10 19:01:42,931 INFO L280 TraceCheckUtils]: 2: Hoare triple {31#true} #valid := #valid[0 := 0]; {31#true} is VALID [2020-07-10 19:01:42,931 INFO L280 TraceCheckUtils]: 3: Hoare triple {31#true} assume 0 < #StackHeapBarrier; {31#true} is VALID [2020-07-10 19:01:42,931 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-10 19:01:42,932 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {31#true} {31#true} #30#return; {31#true} is VALID [2020-07-10 19:01:42,932 INFO L263 TraceCheckUtils]: 6: Hoare triple {31#true} call #t~ret0 := main(); {31#true} is VALID [2020-07-10 19:01:42,934 INFO L280 TraceCheckUtils]: 7: Hoare triple {31#true} SUMMARY for call ~#a~0.base, ~#a~0.offset := #Ultimate.allocOnStack(4); srcloc: mainENTRY {38#(= 1 (select |#valid| |main_~#a~0.base|))} is VALID [2020-07-10 19:01:42,936 INFO L280 TraceCheckUtils]: 8: Hoare triple {38#(= 1 (select |#valid| |main_~#a~0.base|))} SUMMARY for call ~#b~0.base, ~#b~0.offset := #Ultimate.allocOnStack(4); srcloc: L5 {39#(not (= |main_~#b~0.base| |main_~#a~0.base|))} is VALID [2020-07-10 19:01:42,938 INFO L280 TraceCheckUtils]: 9: Hoare triple {39#(not (= |main_~#b~0.base| |main_~#a~0.base|))} ~p1~0.base, ~p1~0.offset := ~#a~0.base, ~#a~0.offset; {40#(not (= main_~p1~0.base |main_~#b~0.base|))} is VALID [2020-07-10 19:01:42,940 INFO L280 TraceCheckUtils]: 10: Hoare triple {40#(not (= main_~p1~0.base |main_~#b~0.base|))} ~p2~0.base, ~p2~0.offset := ~#b~0.base, ~#b~0.offset; {41#(not (= main_~p1~0.base main_~p2~0.base))} is VALID [2020-07-10 19:01:42,942 INFO L280 TraceCheckUtils]: 11: Hoare triple {41#(not (= main_~p1~0.base main_~p2~0.base))} assume ~p1~0.base == ~p2~0.base && ~p1~0.offset == ~p2~0.offset; {32#false} is VALID [2020-07-10 19:01:42,942 INFO L280 TraceCheckUtils]: 12: Hoare triple {32#false} assume !false; {32#false} is VALID [2020-07-10 19:01:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 19:01:42,945 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 19:01:42,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038272112] [2020-07-10 19:01:42,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 19:01:42,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-10 19:01:42,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439655662] [2020-07-10 19:01:42,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-10 19:01:42,960 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 19:01:42,963 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states. [2020-07-10 19:01:42,997 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:01:42,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-10 19:01:42,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 19:01:43,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-10 19:01:43,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-10 19:01:43,010 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2020-07-10 19:01:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:01:43,369 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2020-07-10 19:01:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-10 19:01:43,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-10 19:01:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 19:01:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-10 19:01:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 31 transitions. [2020-07-10 19:01:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-07-10 19:01:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 31 transitions. [2020-07-10 19:01:43,406 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 31 transitions. [2020-07-10 19:01:43,475 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:01:43,482 INFO L225 Difference]: With dead ends: 32 [2020-07-10 19:01:43,483 INFO L226 Difference]: Without dead ends: 0 [2020-07-10 19:01:43,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-07-10 19:01:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-10 19:01:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-10 19:01:43,525 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 19:01:43,526 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-10 19:01:43,526 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 19:01:43,527 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 19:01:43,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:01:43,527 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 19:01:43,528 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 19:01:43,528 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 19:01:43,528 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 19:01:43,528 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-10 19:01:43,529 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-10 19:01:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 19:01:43,529 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-10 19:01:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 19:01:43,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 19:01:43,530 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 19:01:43,530 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 19:01:43,530 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 19:01:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-10 19:01:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-10 19:01:43,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-10 19:01:43,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 19:01:43,533 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-10 19:01:43,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-10 19:01:43,533 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2020-07-10 19:01:43,533 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 19:01:43,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-10 19:01:43,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 19:01:43,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 19:01:43,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-10 19:01:43,712 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-10 19:01:43,712 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-10 19:01:43,712 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-10 19:01:43,712 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-10 19:01:43,712 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-10 19:01:43,713 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-10 19:01:43,713 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-10 19:01:43,713 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-10 19:01:43,713 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-10 19:01:43,713 INFO L264 CegarLoopResult]: At program point L5-4(line 5) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|))) [2020-07-10 19:01:43,714 INFO L264 CegarLoopResult]: At program point L5-5(line 5) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|))) [2020-07-10 19:01:43,714 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2020-07-10 19:01:43,714 INFO L264 CegarLoopResult]: At program point L5-6(line 5) the Hoare annotation is: false [2020-07-10 19:01:43,714 INFO L264 CegarLoopResult]: At program point L5-7(line 5) the Hoare annotation is: false [2020-07-10 19:01:43,715 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 4 17) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-10 19:01:43,715 INFO L264 CegarLoopResult]: At program point L5-8(line 5) the Hoare annotation is: false [2020-07-10 19:01:43,715 INFO L264 CegarLoopResult]: At program point L5-9(line 5) the Hoare annotation is: false [2020-07-10 19:01:43,715 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 4 17) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base)) [2020-07-10 19:01:43,715 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: false [2020-07-10 19:01:43,716 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (= 1 (select |#valid| |main_~#a~0.base|)) (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|))) [2020-07-10 19:01:43,716 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 4 17) the Hoare annotation is: (not (= main_~p1~0.base main_~p2~0.base)) [2020-07-10 19:01:43,716 INFO L264 CegarLoopResult]: At program point L10(lines 4 17) the Hoare annotation is: false [2020-07-10 19:01:43,716 INFO L264 CegarLoopResult]: At program point L9(lines 9 11) the Hoare annotation is: (and (= 1 (select |#valid| |main_~#a~0.base|)) (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|))) [2020-07-10 19:01:43,717 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= 1 (select |#valid| |main_~#a~0.base|)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|))) [2020-07-10 19:01:43,717 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (= 1 (select |#valid| |main_~#a~0.base|)) [2020-07-10 19:01:43,717 INFO L264 CegarLoopResult]: At program point L5-1(line 5) the Hoare annotation is: (and (= 1 (select |#valid| |main_~#a~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|))) [2020-07-10 19:01:43,717 INFO L264 CegarLoopResult]: At program point L5-2(line 5) the Hoare annotation is: (and (= 1 (select |#valid| |main_~#a~0.base|)) (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|))) [2020-07-10 19:01:43,718 INFO L264 CegarLoopResult]: At program point L5-3(line 5) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (not (= main_~p1~0.base |main_~#b~0.base|)) (not (= |main_~#b~0.base| |main_~#a~0.base|))) [2020-07-10 19:01:43,733 INFO L163 areAnnotationChecker]: CFG has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 19:01:43,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 07:01:43 BoogieIcfgContainer [2020-07-10 19:01:43,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 19:01:43,750 INFO L168 Benchmark]: Toolchain (without parser) took 2001.22 ms. Allocated memory was 136.8 MB in the beginning and 231.2 MB in the end (delta: 94.4 MB). Free memory was 100.9 MB in the beginning and 167.9 MB in the end (delta: -67.0 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-07-10 19:01:43,751 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 19:01:43,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.27 ms. Allocated memory is still 136.8 MB. Free memory was 100.7 MB in the beginning and 91.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-10 19:01:43,753 INFO L168 Benchmark]: Boogie Preprocessor took 114.51 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 91.1 MB in the beginning and 179.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-10 19:01:43,753 INFO L168 Benchmark]: RCFGBuilder took 376.70 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 162.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-07-10 19:01:43,754 INFO L168 Benchmark]: TraceAbstraction took 1233.69 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 161.7 MB in the beginning and 167.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-10 19:01:43,758 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 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.27 ms. Allocated memory is still 136.8 MB. Free memory was 100.7 MB in the beginning and 91.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.51 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 91.1 MB in the beginning and 179.3 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.70 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 162.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1233.69 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 161.7 MB in the beginning and 167.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 4]: Procedure Contract for main Derived contract for procedure main: !(p1 == p2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 19 SDslu, 44 SDs, 0 SdLazy, 34 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 28 PreInvPairs, 32 NumberOfFragments, 150 HoareAnnotationTreeSize, 28 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...