/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/indp1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:08,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:08,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:08,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:08,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:08,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:08,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:08,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:08,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:08,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:08,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:08,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:08,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:08,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:08,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:08,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:08,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:08,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:08,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:08,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:08,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:08,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:08,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:08,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:08,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:08,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:08,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:08,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:08,732 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 16:25:08,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:08,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:08,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:08,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:08,790 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:08,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:08,790 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:08,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:08,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:08,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:08,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:08,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:08,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:08,793 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:08,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:08,793 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:08,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:08,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:08,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:08,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:08,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:08,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:08,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:08,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:08,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:08,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:08,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:08,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:08,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:09,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:09,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:09,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:09,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:09,233 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:09,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp1f.c [2021-02-21 16:25:09,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34492fac4/10646bd855e24669aa8c0bbee680be73/FLAG53ae29e4c [2021-02-21 16:25:10,026 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:10,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp1f.c [2021-02-21 16:25:10,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34492fac4/10646bd855e24669aa8c0bbee680be73/FLAG53ae29e4c [2021-02-21 16:25:10,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34492fac4/10646bd855e24669aa8c0bbee680be73 [2021-02-21 16:25:10,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:10,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:10,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:10,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:10,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:10,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbeb4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10, skipping insertion in model container [2021-02-21 16:25:10,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:10,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:10,656 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/indp1f.c[589,602] [2021-02-21 16:25:10,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:10,699 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:10,714 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/indp1f.c[589,602] [2021-02-21 16:25:10,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:10,738 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:10,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10 WrapperNode [2021-02-21 16:25:10,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:10,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:10,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:10,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:10,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (1/1) ... [2021-02-21 16:25:10,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:10,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:10,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:10,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:10,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (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 16:25:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:10,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:11,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:11,191 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 16:25:11,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:11 BoogieIcfgContainer [2021-02-21 16:25:11,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:11,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:11,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:11,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:11,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:10" (1/3) ... [2021-02-21 16:25:11,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecaec94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:11, skipping insertion in model container [2021-02-21 16:25:11,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:10" (2/3) ... [2021-02-21 16:25:11,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecaec94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:11, skipping insertion in model container [2021-02-21 16:25:11,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:11" (3/3) ... [2021-02-21 16:25:11,239 INFO L111 eAbstractionObserver]: Analyzing ICFG indp1f.c [2021-02-21 16:25:11,246 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:11,251 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:11,272 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:11,301 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:11,301 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:11,301 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:11,302 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:11,302 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:11,302 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:11,302 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:11,302 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-21 16:25:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 16:25:11,327 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:11,328 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] [2021-02-21 16:25:11,329 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:11,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash 730907677, now seen corresponding path program 1 times [2021-02-21 16:25:11,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:11,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899267929] [2021-02-21 16:25:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:11,713 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:11,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:11,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:11,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:11,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:11,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:11,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:11,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:11,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:11,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:11,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:11,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:11,852 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 16:25:11,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899267929] [2021-02-21 16:25:11,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:11,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:11,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170479600] [2021-02-21 16:25:11,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:11,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:11,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:11,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:11,879 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-21 16:25:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:11,980 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-02-21 16:25:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:11,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-02-21 16:25:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:11,991 INFO L225 Difference]: With dead ends: 64 [2021-02-21 16:25:11,992 INFO L226 Difference]: Without dead ends: 32 [2021-02-21 16:25:11,995 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 16:25:12,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-21 16:25:12,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-02-21 16:25:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-21 16:25:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-02-21 16:25:12,043 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2021-02-21 16:25:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:12,043 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-02-21 16:25:12,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-02-21 16:25:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 16:25:12,045 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:12,045 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] [2021-02-21 16:25:12,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:12,045 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:12,047 INFO L82 PathProgramCache]: Analyzing trace with hash -548956001, now seen corresponding path program 1 times [2021-02-21 16:25:12,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:12,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75161335] [2021-02-21 16:25:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:12,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:12,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:12,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:12,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:12,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:12,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:12,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:12,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:12,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:12,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:12,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:12,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:12,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:12,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:12,250 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 16:25:12,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75161335] [2021-02-21 16:25:12,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:12,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:12,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849550861] [2021-02-21 16:25:12,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:12,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:12,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:12,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:12,257 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2021-02-21 16:25:12,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:12,432 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-02-21 16:25:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:12,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2021-02-21 16:25:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:12,436 INFO L225 Difference]: With dead ends: 59 [2021-02-21 16:25:12,436 INFO L226 Difference]: Without dead ends: 42 [2021-02-21 16:25:12,437 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 16:25:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-21 16:25:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2021-02-21 16:25:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-21 16:25:12,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-02-21 16:25:12,458 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2021-02-21 16:25:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:12,458 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-02-21 16:25:12,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-02-21 16:25:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 16:25:12,460 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:12,460 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] [2021-02-21 16:25:12,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:12,461 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:12,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:12,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1885615975, now seen corresponding path program 1 times [2021-02-21 16:25:12,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:12,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346303472] [2021-02-21 16:25:12,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:12,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-21 16:25:12,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102040284] [2021-02-21 16:25:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:25:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:12,567 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:12,596 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:12,654 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:12,655 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:12,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-21 16:25:12,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:12 BoogieIcfgContainer [2021-02-21 16:25:12,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:12,910 INFO L168 Benchmark]: Toolchain (without parser) took 2523.45 ms. Allocated memory is still 173.0 MB. Free memory was 147.6 MB in the beginning and 67.6 MB in the end (delta: 80.0 MB). Peak memory consumption was 80.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:12,911 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 173.0 MB. Free memory is still 144.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:12,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.73 ms. Allocated memory is still 173.0 MB. Free memory was 146.5 MB in the beginning and 136.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:12,913 INFO L168 Benchmark]: Boogie Preprocessor took 41.48 ms. Allocated memory is still 173.0 MB. Free memory was 136.2 MB in the beginning and 134.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:12,914 INFO L168 Benchmark]: RCFGBuilder took 411.70 ms. Allocated memory is still 173.0 MB. Free memory was 134.5 MB in the beginning and 118.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:12,915 INFO L168 Benchmark]: TraceAbstraction took 1681.26 ms. Allocated memory is still 173.0 MB. Free memory was 155.1 MB in the beginning and 67.6 MB in the end (delta: 87.6 MB). Peak memory consumption was 87.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:12,919 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 173.0 MB. Free memory is still 144.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 333.73 ms. Allocated memory is still 173.0 MB. Free memory was 146.5 MB in the beginning and 136.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.48 ms. Allocated memory is still 173.0 MB. Free memory was 136.2 MB in the beginning and 134.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 411.70 ms. Allocated memory is still 173.0 MB. Free memory was 134.5 MB in the beginning and 118.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1681.26 ms. Allocated memory is still 173.0 MB. Free memory was 155.1 MB in the beginning and 67.6 MB in the end (delta: 87.6 MB). Peak memory consumption was 87.0 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)=17, 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 *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L30] COND TRUE i