/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:22,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:22,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:22,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 16:25:22,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:22,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:22,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:22,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:22,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:22,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:22,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:22,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:22,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:22,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:22,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:22,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:22,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:23,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:23,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:23,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:23,004 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 [2021-02-21 16:25:23,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:23,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:23,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:23,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:23,033 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:23,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:23,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:23,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:23,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:23,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:23,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:23,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:23,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:23,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:23,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:23,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:23,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:23,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:23,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:23,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:23,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:23,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:23,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:23,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:23,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:23,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:23,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:23,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:23,039 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:23,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:23,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:23,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:23,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:23,463 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:23,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2021-02-21 16:25:23,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c942089/457c3a9df02b4fe99413ec1d0b28a1d3/FLAGfda1e4121 [2021-02-21 16:25:24,241 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:24,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1f.c [2021-02-21 16:25:24,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c942089/457c3a9df02b4fe99413ec1d0b28a1d3/FLAGfda1e4121 [2021-02-21 16:25:24,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4c942089/457c3a9df02b4fe99413ec1d0b28a1d3 [2021-02-21 16:25:24,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:24,298 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:24,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:24,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:24,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:24,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0b5f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24, skipping insertion in model container [2021-02-21 16:25:24,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:24,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:24,474 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/res1f.c[588,601] [2021-02-21 16:25:24,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:24,505 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:24,519 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/res1f.c[588,601] [2021-02-21 16:25:24,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:24,546 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:24,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24 WrapperNode [2021-02-21 16:25:24,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:24,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:24,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:24,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:24,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (1/1) ... [2021-02-21 16:25:24,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:24,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:24,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:24,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:24,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (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 [2021-02-21 16:25:24,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:24,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:24,731 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:24,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:24,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:25,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:25,101 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 16:25:25,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:25 BoogieIcfgContainer [2021-02-21 16:25:25,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:25,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:25,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:25,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:25,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:24" (1/3) ... [2021-02-21 16:25:25,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e947600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:25, skipping insertion in model container [2021-02-21 16:25:25,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:24" (2/3) ... [2021-02-21 16:25:25,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e947600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:25, skipping insertion in model container [2021-02-21 16:25:25,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:25" (3/3) ... [2021-02-21 16:25:25,129 INFO L111 eAbstractionObserver]: Analyzing ICFG res1f.c [2021-02-21 16:25:25,142 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:25,150 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:25,179 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:25,206 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:25,206 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:25,206 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:25,206 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:25,206 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:25,207 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:25,207 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:25,207 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:25,225 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-21 16:25:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 16:25:25,231 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:25,232 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] [2021-02-21 16:25:25,232 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:25,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:25,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1106110167, now seen corresponding path program 1 times [2021-02-21 16:25:25,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:25,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695555261] [2021-02-21 16:25:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:25,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:25,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,547 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:25,554 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:25,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695555261] [2021-02-21 16:25:25,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:25,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:25,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479729563] [2021-02-21 16:25:25,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:25,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:25,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:25,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:25,587 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-21 16:25:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:25,689 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-02-21 16:25:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:25,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-02-21 16:25:25,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:25,699 INFO L225 Difference]: With dead ends: 64 [2021-02-21 16:25:25,699 INFO L226 Difference]: Without dead ends: 30 [2021-02-21 16:25:25,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:25,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-21 16:25:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-21 16:25:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-21 16:25:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-02-21 16:25:25,782 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2021-02-21 16:25:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:25,783 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-02-21 16:25:25,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:25,788 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-02-21 16:25:25,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 16:25:25,790 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:25,790 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] [2021-02-21 16:25:25,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:25,791 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:25,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash 85041813, now seen corresponding path program 1 times [2021-02-21 16:25:25,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:25,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735047481] [2021-02-21 16:25:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:25,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:25,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:25,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:25,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:25,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:25,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:25,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735047481] [2021-02-21 16:25:25,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:25,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:25,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152630554] [2021-02-21 16:25:25,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:25,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:25,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:25,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:25,999 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2021-02-21 16:25:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:26,209 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-02-21 16:25:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:26,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-02-21 16:25:26,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:26,218 INFO L225 Difference]: With dead ends: 53 [2021-02-21 16:25:26,219 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 16:25:26,225 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 [2021-02-21 16:25:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 16:25:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-02-21 16:25:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-21 16:25:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-02-21 16:25:26,247 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2021-02-21 16:25:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:26,248 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-02-21 16:25:26,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-02-21 16:25:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-21 16:25:26,250 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:26,251 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, 1, 1, 1] [2021-02-21 16:25:26,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:26,251 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:26,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:26,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1689002269, now seen corresponding path program 1 times [2021-02-21 16:25:26,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:26,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144747766] [2021-02-21 16:25:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:26,384 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:26,428 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:26,462 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:26,463 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:26,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:26,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:26 BoogieIcfgContainer [2021-02-21 16:25:26,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:26,520 INFO L168 Benchmark]: Toolchain (without parser) took 2232.12 ms. Allocated memory was 157.3 MB in the beginning and 196.1 MB in the end (delta: 38.8 MB). Free memory was 137.0 MB in the beginning and 134.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:26,521 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:26,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.61 ms. Allocated memory is still 157.3 MB. Free memory was 135.9 MB in the beginning and 125.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:26,523 INFO L168 Benchmark]: Boogie Preprocessor took 41.22 ms. Allocated memory is still 157.3 MB. Free memory was 125.8 MB in the beginning and 124.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:26,523 INFO L168 Benchmark]: RCFGBuilder took 517.02 ms. Allocated memory is still 157.3 MB. Free memory was 124.1 MB in the beginning and 123.4 MB in the end (delta: 736.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:26,524 INFO L168 Benchmark]: TraceAbstraction took 1404.93 ms. Allocated memory was 157.3 MB in the beginning and 196.1 MB in the end (delta: 38.8 MB). Free memory was 123.0 MB in the beginning and 134.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 27.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:26,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 157.3 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.61 ms. Allocated memory is still 157.3 MB. Free memory was 135.9 MB in the beginning and 125.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.22 ms. Allocated memory is still 157.3 MB. Free memory was 125.8 MB in the beginning and 124.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 517.02 ms. Allocated memory is still 157.3 MB. Free memory was 124.1 MB in the beginning and 123.4 MB in the end (delta: 736.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1404.93 ms. Allocated memory was 157.3 MB in the beginning and 196.1 MB in the end (delta: 38.8 MB). Free memory was 123.0 MB in the beginning and 134.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 27.0 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); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 VAL [\old(N)=0, a={-2:0}, b={5:0}, i=0, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(int)*N)={-2:0}, N=1, sum={7:0}] [L33] COND TRUE i