/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/ms1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:45,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:45,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:45,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:45,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:45,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:45,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:45,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:46,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:46,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:46,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:46,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:46,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:46,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:46,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:46,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:46,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:46,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:46,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:46,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:46,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:46,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:46,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:46,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:46,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:46,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:46,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:46,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:46,078 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 [2021-02-23 13:51:46,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:46,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:46,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:46,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:46,150 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:46,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:46,151 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:46,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:46,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:46,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:46,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:46,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:46,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:46,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:46,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:46,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:46,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:46,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:46,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:46,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:46,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:46,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:46,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:46,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:46,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:46,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:46,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:46,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:46,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:46,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:46,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:46,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:46,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:46,663 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:46,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-23 13:51:46,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56fde2360/d35fc5e40a654072806bc738462554d4/FLAG865dabbd9 [2021-02-23 13:51:47,352 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:47,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms1f.c [2021-02-23 13:51:47,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56fde2360/d35fc5e40a654072806bc738462554d4/FLAG865dabbd9 [2021-02-23 13:51:47,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56fde2360/d35fc5e40a654072806bc738462554d4 [2021-02-23 13:51:47,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:47,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:47,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:47,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:47,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:47,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442422bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47, skipping insertion in model container [2021-02-23 13:51:47,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:47,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:47,599 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/ms1f.c[587,600] [2021-02-23 13:51:47,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:47,626 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:47,644 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/ms1f.c[587,600] [2021-02-23 13:51:47,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:47,672 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:47,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47 WrapperNode [2021-02-23 13:51:47,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:47,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:47,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:47,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:47,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:47,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:47,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:47,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:47,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (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 [2021-02-23 13:51:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:47,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:47,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:48,183 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:48,184 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:51:48,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:48 BoogieIcfgContainer [2021-02-23 13:51:48,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:48,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:48,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:48,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:48,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:47" (1/3) ... [2021-02-23 13:51:48,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110e09b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:48, skipping insertion in model container [2021-02-23 13:51:48,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47" (2/3) ... [2021-02-23 13:51:48,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110e09b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:48, skipping insertion in model container [2021-02-23 13:51:48,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:48" (3/3) ... [2021-02-23 13:51:48,229 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1f.c [2021-02-23 13:51:48,246 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:48,261 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:48,303 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:48,351 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:48,352 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:48,352 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:48,352 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:48,352 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:48,352 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:48,352 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:48,353 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-23 13:51:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:51:48,389 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:48,390 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] [2021-02-23 13:51:48,391 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:48,405 INFO L82 PathProgramCache]: Analyzing trace with hash 863653859, now seen corresponding path program 1 times [2021-02-23 13:51:48,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:48,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127196168] [2021-02-23 13:51:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:48,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:48,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:48,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:48,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127196168] [2021-02-23 13:51:48,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:48,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:48,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807321261] [2021-02-23 13:51:48,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:48,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:48,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:48,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:48,851 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2021-02-23 13:51:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:48,948 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-02-23 13:51:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:48,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-02-23 13:51:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:48,960 INFO L225 Difference]: With dead ends: 54 [2021-02-23 13:51:48,960 INFO L226 Difference]: Without dead ends: 25 [2021-02-23 13:51:48,964 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 [2021-02-23 13:51:48,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-02-23 13:51:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-02-23 13:51:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-23 13:51:49,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-02-23 13:51:49,011 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2021-02-23 13:51:49,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:49,012 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-02-23 13:51:49,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:49,012 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-02-23 13:51:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:51:49,013 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:49,013 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] [2021-02-23 13:51:49,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:49,014 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:49,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:49,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1121819297, now seen corresponding path program 1 times [2021-02-23 13:51:49,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:49,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566991005] [2021-02-23 13:51:49,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:49,092 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:49,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:49,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:49,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:49,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:49,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:49,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:49,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566991005] [2021-02-23 13:51:49,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:49,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:49,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049961630] [2021-02-23 13:51:49,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:49,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:49,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:49,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:49,181 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2021-02-23 13:51:49,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:49,331 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-02-23 13:51:49,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:49,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-02-23 13:51:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:49,333 INFO L225 Difference]: With dead ends: 40 [2021-02-23 13:51:49,333 INFO L226 Difference]: Without dead ends: 30 [2021-02-23 13:51:49,335 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 [2021-02-23 13:51:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-23 13:51:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-02-23 13:51:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-23 13:51:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-02-23 13:51:49,346 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2021-02-23 13:51:49,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:49,346 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-02-23 13:51:49,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-02-23 13:51:49,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:51:49,351 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:49,351 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] [2021-02-23 13:51:49,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:49,352 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:49,353 INFO L82 PathProgramCache]: Analyzing trace with hash -667943349, now seen corresponding path program 1 times [2021-02-23 13:51:49,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:49,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815932698] [2021-02-23 13:51:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:49,401 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:49,465 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:49,528 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:49,529 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:49,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:49,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:49 BoogieIcfgContainer [2021-02-23 13:51:49,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:49,611 INFO L168 Benchmark]: Toolchain (without parser) took 2228.33 ms. Allocated memory is still 156.2 MB. Free memory was 132.1 MB in the beginning and 70.2 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:49,612 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:49,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.59 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:49,614 INFO L168 Benchmark]: Boogie Preprocessor took 47.36 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:49,615 INFO L168 Benchmark]: RCFGBuilder took 465.92 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 139.7 MB in the end (delta: -20.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:49,615 INFO L168 Benchmark]: TraceAbstraction took 1415.55 ms. Allocated memory is still 156.2 MB. Free memory was 138.9 MB in the beginning and 70.2 MB in the end (delta: 68.7 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:49,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.59 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.36 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 465.92 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 139.7 MB in the end (delta: -20.3 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1415.55 ms. Allocated memory is still 156.2 MB. Free memory was 138.9 MB in the beginning and 70.2 MB in the end (delta: 68.7 MB). Peak memory consumption was 67.1 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)=118, 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={8:0}] [L31] COND TRUE i