/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s4liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:31,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:31,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:31,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 17:58:31,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:31,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:31,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:31,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:31,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:31,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:31,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:31,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:31,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:31,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:31,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:31,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:31,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:31,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:31,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:31,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:31,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 17:58:31,838 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:31,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:31,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:31,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:31,844 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:31,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:31,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:31,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:31,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:31,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:31,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:31,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:31,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:31,847 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:31,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:31,848 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:31,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:31,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:31,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:31,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:31,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:31,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:31,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:31,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:31,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:31,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:31,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:31,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:31,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:32,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:32,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:32,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:32,345 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:32,346 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:32,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4liff.c [2021-02-19 17:58:32,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3740794/a2a3d06032184996ae4172a2d81b8cc7/FLAG5df580cfd [2021-02-19 17:58:33,130 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:33,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4liff.c [2021-02-19 17:58:33,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3740794/a2a3d06032184996ae4172a2d81b8cc7/FLAG5df580cfd [2021-02-19 17:58:33,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb3740794/a2a3d06032184996ae4172a2d81b8cc7 [2021-02-19 17:58:33,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:33,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:33,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:33,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:33,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:33,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58da69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33, skipping insertion in model container [2021-02-19 17:58:33,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:33,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:33,712 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4liff.c[589,602] [2021-02-19 17:58:33,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:33,745 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:33,761 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4liff.c[589,602] [2021-02-19 17:58:33,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:33,798 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:33,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33 WrapperNode [2021-02-19 17:58:33,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:33,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:33,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:33,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:33,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (1/1) ... [2021-02-19 17:58:33,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:33,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:33,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:33,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:33,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (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 [2021-02-19 17:58:34,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:34,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:34,026 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:34,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:34,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:34,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:34,027 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:34,028 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:34,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:34,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:34,031 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:34,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:34,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:34,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:34,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:34,577 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-19 17:58:34,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:34 BoogieIcfgContainer [2021-02-19 17:58:34,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:34,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:34,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:34,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:34,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:33" (1/3) ... [2021-02-19 17:58:34,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cbc0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:34, skipping insertion in model container [2021-02-19 17:58:34,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:33" (2/3) ... [2021-02-19 17:58:34,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cbc0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:34, skipping insertion in model container [2021-02-19 17:58:34,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:34" (3/3) ... [2021-02-19 17:58:34,590 INFO L111 eAbstractionObserver]: Analyzing ICFG s4liff.c [2021-02-19 17:58:34,598 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:34,604 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:34,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:34,660 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:34,661 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:34,661 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:34,661 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:34,661 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:34,661 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:34,661 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:34,662 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-19 17:58:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-19 17:58:34,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:34,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:58:34,690 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash -378919619, now seen corresponding path program 1 times [2021-02-19 17:58:34,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:34,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447846276] [2021-02-19 17:58:34,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:34,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:34,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:34,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:34,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:35,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:35,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:35,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:35,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:35,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447846276] [2021-02-19 17:58:35,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:35,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:35,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209553303] [2021-02-19 17:58:35,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:35,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:35,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:35,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:35,164 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-19 17:58:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:35,292 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-19 17:58:35,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:35,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-02-19 17:58:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:35,302 INFO L225 Difference]: With dead ends: 60 [2021-02-19 17:58:35,303 INFO L226 Difference]: Without dead ends: 28 [2021-02-19 17:58:35,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:35,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-19 17:58:35,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-02-19 17:58:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-19 17:58:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-02-19 17:58:35,351 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-02-19 17:58:35,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:35,352 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-02-19 17:58:35,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:35,352 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-02-19 17:58:35,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-19 17:58:35,353 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:35,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:58:35,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:35,354 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1390036869, now seen corresponding path program 1 times [2021-02-19 17:58:35,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:35,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272374154] [2021-02-19 17:58:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:35,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:35,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:35,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:35,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:35,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:35,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:35,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:35,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:35,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272374154] [2021-02-19 17:58:35,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:35,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:35,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736859448] [2021-02-19 17:58:35,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:35,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:35,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:35,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:35,541 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2021-02-19 17:58:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:35,736 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-02-19 17:58:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:35,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-02-19 17:58:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:35,744 INFO L225 Difference]: With dead ends: 48 [2021-02-19 17:58:35,745 INFO L226 Difference]: Without dead ends: 35 [2021-02-19 17:58:35,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-19 17:58:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-19 17:58:35,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-02-19 17:58:35,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-19 17:58:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-02-19 17:58:35,776 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2021-02-19 17:58:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:35,776 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-02-19 17:58:35,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-02-19 17:58:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-19 17:58:35,780 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:35,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:58:35,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:35,781 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1506162525, now seen corresponding path program 1 times [2021-02-19 17:58:35,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:35,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578023389] [2021-02-19 17:58:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:35,870 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:35,921 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:35,967 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:35,968 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:35,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:58:36,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:36 BoogieIcfgContainer [2021-02-19 17:58:36,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:36,014 INFO L168 Benchmark]: Toolchain (without parser) took 2540.16 ms. Allocated memory is still 152.0 MB. Free memory was 128.1 MB in the beginning and 57.7 MB in the end (delta: 70.4 MB). Peak memory consumption was 70.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:36,015 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 152.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:36,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.19 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 116.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:36,016 INFO L168 Benchmark]: Boogie Preprocessor took 93.91 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:36,017 INFO L168 Benchmark]: RCFGBuilder took 683.83 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 130.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:36,018 INFO L168 Benchmark]: TraceAbstraction took 1430.60 ms. Allocated memory is still 152.0 MB. Free memory was 130.5 MB in the beginning and 57.7 MB in the end (delta: 72.9 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:36,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 152.0 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.19 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 116.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.91 ms. Allocated memory is still 152.0 MB. Free memory was 116.6 MB in the beginning and 114.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 683.83 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 130.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1430.60 ms. Allocated memory is still 152.0 MB. Free memory was 130.5 MB in the beginning and 57.7 MB in the end (delta: 72.9 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = N [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={7:0}] [L32] COND TRUE i