/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/s5iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:35,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:36,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:36,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:36,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:36,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:36,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:36,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:36,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:36,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:36,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:36,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:36,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:36,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:36,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:36,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:36,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:36,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:36,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:36,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:36,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:36,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:36,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:36,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:36,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:36,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:36,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:36,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:36,152 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 16:25:36,203 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:36,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:36,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:36,207 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:36,207 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:36,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:36,208 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:36,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:36,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:36,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:36,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:36,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:36,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:36,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:36,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:36,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:36,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:36,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:36,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:36,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:36,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:36,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:36,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:36,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:36,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:36,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:36,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:36,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:36,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:36,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:36,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:36,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:36,631 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:36,632 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:36,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5iff.c [2021-02-21 16:25:36,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/220f9cb5e/bf616c749ded4619a0b8ab043383d756/FLAG1fae38ddb [2021-02-21 16:25:37,303 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:37,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s5iff.c [2021-02-21 16:25:37,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/220f9cb5e/bf616c749ded4619a0b8ab043383d756/FLAG1fae38ddb [2021-02-21 16:25:37,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/220f9cb5e/bf616c749ded4619a0b8ab043383d756 [2021-02-21 16:25:37,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:37,648 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:37,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:37,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:37,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:37,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:37,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3249adfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37, skipping insertion in model container [2021-02-21 16:25:37,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:37,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:37,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:37,871 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/s5iff.c[588,601] [2021-02-21 16:25:37,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:37,900 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:37,915 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/s5iff.c[588,601] [2021-02-21 16:25:37,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:37,944 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:37,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37 WrapperNode [2021-02-21 16:25:37,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:37,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:37,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:37,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:37,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:37,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:37,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:37,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:38,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:38,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:38,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (1/1) ... [2021-02-21 16:25:38,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:38,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:38,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:38,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:38,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (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 16:25:38,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:38,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:38,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:38,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:38,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:38,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:38,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:38,639 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 16:25:38,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:38 BoogieIcfgContainer [2021-02-21 16:25:38,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:38,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:38,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:38,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:38,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:37" (1/3) ... [2021-02-21 16:25:38,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e857db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:38, skipping insertion in model container [2021-02-21 16:25:38,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:37" (2/3) ... [2021-02-21 16:25:38,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e857db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:38, skipping insertion in model container [2021-02-21 16:25:38,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:38" (3/3) ... [2021-02-21 16:25:38,651 INFO L111 eAbstractionObserver]: Analyzing ICFG s5iff.c [2021-02-21 16:25:38,659 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:38,689 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:38,708 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:38,735 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:38,736 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:38,736 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:38,736 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:38,736 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:38,736 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:38,736 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:38,737 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:38,754 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-21 16:25:38,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-21 16:25:38,760 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:38,761 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] [2021-02-21 16:25:38,761 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:38,768 INFO L82 PathProgramCache]: Analyzing trace with hash 863653859, now seen corresponding path program 1 times [2021-02-21 16:25:38,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:38,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771452775] [2021-02-21 16:25:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:38,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:38,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:38,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:38,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:39,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:39,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:39,058 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,059 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:39,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:39,066 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 16:25:39,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771452775] [2021-02-21 16:25:39,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:39,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:39,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88800952] [2021-02-21 16:25:39,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:39,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:39,090 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2021-02-21 16:25:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:39,202 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-02-21 16:25:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:39,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-02-21 16:25:39,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:39,211 INFO L225 Difference]: With dead ends: 54 [2021-02-21 16:25:39,211 INFO L226 Difference]: Without dead ends: 25 [2021-02-21 16:25:39,214 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 16:25:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-02-21 16:25:39,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-02-21 16:25:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-21 16:25:39,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-02-21 16:25:39,257 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2021-02-21 16:25:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:39,257 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-02-21 16:25:39,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-02-21 16:25:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-21 16:25:39,258 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:39,259 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] [2021-02-21 16:25:39,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:39,259 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:39,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1121819297, now seen corresponding path program 1 times [2021-02-21 16:25:39,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:39,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112662510] [2021-02-21 16:25:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:39,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:39,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:39,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:39,348 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:39,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:39,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:39,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:39,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:39,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:39,436 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 16:25:39,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112662510] [2021-02-21 16:25:39,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:39,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:39,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977650270] [2021-02-21 16:25:39,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:39,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:39,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:39,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:39,440 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2021-02-21 16:25:39,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:39,573 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-02-21 16:25:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:39,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-02-21 16:25:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:39,575 INFO L225 Difference]: With dead ends: 40 [2021-02-21 16:25:39,575 INFO L226 Difference]: Without dead ends: 30 [2021-02-21 16:25:39,576 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 16:25:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-21 16:25:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-02-21 16:25:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-21 16:25:39,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-02-21 16:25:39,586 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2021-02-21 16:25:39,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:39,586 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-02-21 16:25:39,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:39,586 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-02-21 16:25:39,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 16:25:39,587 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:39,587 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] [2021-02-21 16:25:39,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:39,588 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:39,589 INFO L82 PathProgramCache]: Analyzing trace with hash -667943349, now seen corresponding path program 1 times [2021-02-21 16:25:39,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:39,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015285962] [2021-02-21 16:25:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:39,642 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:39,717 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:39,752 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:39,753 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:39,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:39,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:39 BoogieIcfgContainer [2021-02-21 16:25:39,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:39,795 INFO L168 Benchmark]: Toolchain (without parser) took 2160.41 ms. Allocated memory is still 168.8 MB. Free memory was 143.5 MB in the beginning and 83.7 MB in the end (delta: 59.8 MB). Peak memory consumption was 60.9 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:39,796 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory was 139.9 MB in the beginning and 139.8 MB in the end (delta: 100.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:39,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.84 ms. Allocated memory is still 168.8 MB. Free memory was 142.4 MB in the beginning and 132.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:39,798 INFO L168 Benchmark]: Boogie Preprocessor took 82.38 ms. Allocated memory is still 168.8 MB. Free memory was 132.4 MB in the beginning and 130.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:39,799 INFO L168 Benchmark]: RCFGBuilder took 612.09 ms. Allocated memory is still 168.8 MB. Free memory was 130.7 MB in the beginning and 114.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:39,800 INFO L168 Benchmark]: TraceAbstraction took 1150.45 ms. Allocated memory is still 168.8 MB. Free memory was 113.7 MB in the beginning and 83.7 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:39,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory was 139.9 MB in the beginning and 139.8 MB in the end (delta: 100.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.84 ms. Allocated memory is still 168.8 MB. Free memory was 142.4 MB in the beginning and 132.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.38 ms. Allocated memory is still 168.8 MB. Free memory was 132.4 MB in the beginning and 130.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 612.09 ms. Allocated memory is still 168.8 MB. Free memory was 130.7 MB in the beginning and 114.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1150.45 ms. Allocated memory is still 168.8 MB. Free memory was 113.7 MB in the beginning and 83.7 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] COND TRUE i