/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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:45,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:45,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:45,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:51:45,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:45,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:45,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:45,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:45,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:45,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:45,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:45,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:45,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:45,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:45,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:45,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:45,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:45,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:45,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:45,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:45,807 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 13:51:45,864 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:45,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:45,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:45,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:45,869 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:45,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:45,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:45,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:45,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:45,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:45,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:45,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:45,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:45,873 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:45,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:45,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:45,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:45,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:45,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:45,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:45,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:45,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:45,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:45,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:45,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:45,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:45,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:45,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:45,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:46,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:46,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:46,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:46,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:46,364 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:46,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2021-02-23 13:51:46,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445a694bb/671a9a40fd8140f9ad48d1e977b186d2/FLAG1bd8fb5e8 [2021-02-23 13:51:47,155 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:47,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modsf.c [2021-02-23 13:51:47,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445a694bb/671a9a40fd8140f9ad48d1e977b186d2/FLAG1bd8fb5e8 [2021-02-23 13:51:47,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445a694bb/671a9a40fd8140f9ad48d1e977b186d2 [2021-02-23 13:51:47,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:47,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:47,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:47,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:47,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:47,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d9b96c 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 13:51:47,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:47" (1/1) ... [2021-02-23 13:51:47,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:47,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:47,700 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/modsf.c[588,601] [2021-02-23 13:51:47,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:47,733 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:47,747 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/modsf.c[588,601] [2021-02-23 13:51:47,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:47,775 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:47,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:47 WrapperNode [2021-02-23 13:51:47,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:47,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:47,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:47,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:47,788 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 13:51:47,789 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 13:51:47,798 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 13:51:47,799 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 13:51:47,809 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 13:51:47,815 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 13:51:47,818 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 13:51:47,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:47,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:47,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:47,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:47,823 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 13:51:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:47,929 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:47,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:47,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:48,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:48,282 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 13:51:48,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:48 BoogieIcfgContainer [2021-02-23 13:51:48,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:48,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:48,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:48,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:48,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:47" (1/3) ... [2021-02-23 13:51:48,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f286b8 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 13:51:48,301 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 13:51:48,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f286b8 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 13:51:48,302 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 13:51:48,304 INFO L111 eAbstractionObserver]: Analyzing ICFG modsf.c [2021-02-23 13:51:48,312 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:48,317 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:48,339 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:48,386 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:48,387 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:48,387 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:48,387 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:48,387 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:48,388 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:48,388 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:48,388 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-23 13:51:48,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:51:48,422 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:48,423 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 13:51:48,423 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:48,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1425380239, now seen corresponding path program 1 times [2021-02-23 13:51:48,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:48,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700406206] [2021-02-23 13:51:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:48,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:48,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:48,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:48,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:48,912 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 13:51:48,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700406206] [2021-02-23 13:51:48,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:48,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:48,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866548632] [2021-02-23 13:51:48,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:48,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:48,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:48,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:48,942 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2021-02-23 13:51:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:49,112 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2021-02-23 13:51:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:49,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-23 13:51:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:49,124 INFO L225 Difference]: With dead ends: 70 [2021-02-23 13:51:49,124 INFO L226 Difference]: Without dead ends: 35 [2021-02-23 13:51:49,131 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 13:51:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-23 13:51:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-23 13:51:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-23 13:51:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-02-23 13:51:49,208 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2021-02-23 13:51:49,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:49,210 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-02-23 13:51:49,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-02-23 13:51:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:51:49,212 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:49,212 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 13:51:49,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:49,213 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:49,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1281239155, now seen corresponding path program 1 times [2021-02-23 13:51:49,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:49,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189360877] [2021-02-23 13:51:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:49,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:49,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:49,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:49,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:49,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:49,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:49,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:49,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:49,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:49,392 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 13:51:49,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189360877] [2021-02-23 13:51:49,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:49,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:49,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208575807] [2021-02-23 13:51:49,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:49,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:49,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:49,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:49,396 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2021-02-23 13:51:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:49,590 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-02-23 13:51:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:49,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-02-23 13:51:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:49,595 INFO L225 Difference]: With dead ends: 67 [2021-02-23 13:51:49,595 INFO L226 Difference]: Without dead ends: 47 [2021-02-23 13:51:49,596 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 13:51:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-23 13:51:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2021-02-23 13:51:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-23 13:51:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-23 13:51:49,612 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2021-02-23 13:51:49,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:49,612 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-23 13:51:49,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-23 13:51:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 13:51:49,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:49,614 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, 1] [2021-02-23 13:51:49,614 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:49,615 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:49,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:49,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1000164587, now seen corresponding path program 1 times [2021-02-23 13:51:49,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:49,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315648657] [2021-02-23 13:51:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:49,645 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-23 13:51:49,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190040209] [2021-02-23 13:51:49,646 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 [2021-02-23 13:51:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:49,727 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:49,757 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:49,838 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:49,838 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:50,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-23 13:51:50,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:50 BoogieIcfgContainer [2021-02-23 13:51:50,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:50,103 INFO L168 Benchmark]: Toolchain (without parser) took 2607.47 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 100.1 MB in the end (delta: 31.3 MB). Peak memory consumption was 32.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:50,104 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 156.2 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:50,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.58 ms. Allocated memory is still 156.2 MB. Free memory was 130.1 MB in the beginning and 120.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:50,106 INFO L168 Benchmark]: Boogie Preprocessor took 43.85 ms. Allocated memory is still 156.2 MB. Free memory was 120.1 MB in the beginning and 118.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:50,107 INFO L168 Benchmark]: RCFGBuilder took 462.64 ms. Allocated memory is still 156.2 MB. Free memory was 118.4 MB in the beginning and 100.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:50,108 INFO L168 Benchmark]: TraceAbstraction took 1805.36 ms. Allocated memory is still 156.2 MB. Free memory was 138.0 MB in the beginning and 100.1 MB in the end (delta: 37.9 MB). Peak memory consumption was 37.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:50,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 156.2 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.58 ms. Allocated memory is still 156.2 MB. Free memory was 130.1 MB in the beginning and 120.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.85 ms. Allocated memory is still 156.2 MB. Free memory was 120.1 MB in the beginning and 118.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 462.64 ms. Allocated memory is still 156.2 MB. Free memory was 118.4 MB in the beginning and 100.1 MB in the end (delta: 18.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1805.36 ms. Allocated memory is still 156.2 MB. Free memory was 138.0 MB in the beginning and 100.1 MB in the end (delta: 37.9 MB). Peak memory consumption was 37.6 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)=15, 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L32] COND TRUE i