/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/sina2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:39,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:39,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:39,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:39,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:39,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:39,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:39,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:39,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:39,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:39,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:39,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:39,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:39,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:39,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:39,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:39,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:39,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:39,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:39,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:39,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:39,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:39,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:39,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:39,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:39,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:39,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:39,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:39,433 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 16:25:39,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:39,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:39,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:39,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:39,462 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:39,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:39,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:39,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:39,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:39,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:39,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:39,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:39,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:39,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:39,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:39,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:39,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:39,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:39,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:39,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:39,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:39,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:39,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:39,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:39,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:39,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:39,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:39,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:39,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:39,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:39,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:39,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:39,879 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:39,880 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:39,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina2f.c [2021-02-21 16:25:39,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746fc651a/4cfdac04c0b14b77a6f1124fd34347cb/FLAG917499748 [2021-02-21 16:25:40,554 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:40,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina2f.c [2021-02-21 16:25:40,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746fc651a/4cfdac04c0b14b77a6f1124fd34347cb/FLAG917499748 [2021-02-21 16:25:40,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/746fc651a/4cfdac04c0b14b77a6f1124fd34347cb [2021-02-21 16:25:40,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:40,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:40,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:40,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:40,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:40,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:40,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae49ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40, skipping insertion in model container [2021-02-21 16:25:40,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:40,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:40,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:40,911 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/sina2f.c[589,602] [2021-02-21 16:25:40,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:40,942 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:40,961 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/sina2f.c[589,602] [2021-02-21 16:25:40,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:40,987 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:40,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40 WrapperNode [2021-02-21 16:25:40,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:40,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:40,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:40,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:41,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:41,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:41,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:41,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:41,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:41,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:41,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (1/1) ... [2021-02-21 16:25:41,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:41,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:41,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:41,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:41,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (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 16:25:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:41,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:41,670 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 16:25:41,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:41 BoogieIcfgContainer [2021-02-21 16:25:41,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:41,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:41,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:41,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:41,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:40" (1/3) ... [2021-02-21 16:25:41,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b114d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:41, skipping insertion in model container [2021-02-21 16:25:41,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:40" (2/3) ... [2021-02-21 16:25:41,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b114d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:41, skipping insertion in model container [2021-02-21 16:25:41,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:41" (3/3) ... [2021-02-21 16:25:41,681 INFO L111 eAbstractionObserver]: Analyzing ICFG sina2f.c [2021-02-21 16:25:41,688 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:41,693 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:41,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:41,742 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:41,743 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:41,743 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:41,743 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:41,743 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:41,743 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:41,743 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:41,744 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-21 16:25:41,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 16:25:41,768 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:41,769 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 16:25:41,769 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:41,776 INFO L82 PathProgramCache]: Analyzing trace with hash 730907677, now seen corresponding path program 1 times [2021-02-21 16:25:41,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:41,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325889653] [2021-02-21 16:25:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:41,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:41,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:41,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:41,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:42,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:42,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:42,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:42,116 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 16:25:42,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325889653] [2021-02-21 16:25:42,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:42,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:42,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742969366] [2021-02-21 16:25:42,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:42,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:42,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:42,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:42,154 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-21 16:25:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:42,360 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-02-21 16:25:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:42,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-02-21 16:25:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:42,372 INFO L225 Difference]: With dead ends: 64 [2021-02-21 16:25:42,372 INFO L226 Difference]: Without dead ends: 32 [2021-02-21 16:25:42,376 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 16:25:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-21 16:25:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-02-21 16:25:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-21 16:25:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-02-21 16:25:42,422 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2021-02-21 16:25:42,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:42,422 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-02-21 16:25:42,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-02-21 16:25:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 16:25:42,424 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:42,424 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 16:25:42,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:42,425 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:42,426 INFO L82 PathProgramCache]: Analyzing trace with hash -548956001, now seen corresponding path program 1 times [2021-02-21 16:25:42,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:42,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201083120] [2021-02-21 16:25:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:42,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:42,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:42,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:42,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:42,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:42,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:42,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:42,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:42,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:42,672 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 16:25:42,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201083120] [2021-02-21 16:25:42,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:42,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:42,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444786709] [2021-02-21 16:25:42,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:42,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:42,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:42,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:42,678 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2021-02-21 16:25:43,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:43,029 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-02-21 16:25:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:43,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2021-02-21 16:25:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:43,033 INFO L225 Difference]: With dead ends: 59 [2021-02-21 16:25:43,034 INFO L226 Difference]: Without dead ends: 42 [2021-02-21 16:25:43,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:25:43,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-21 16:25:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2021-02-21 16:25:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-21 16:25:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-02-21 16:25:43,050 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2021-02-21 16:25:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:43,050 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-02-21 16:25:43,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-02-21 16:25:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 16:25:43,052 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:43,052 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 16:25:43,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:43,053 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1885615975, now seen corresponding path program 1 times [2021-02-21 16:25:43,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:43,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052745733] [2021-02-21 16:25:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:43,155 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:43,196 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:43,231 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:43,231 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:43,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:43,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:43 BoogieIcfgContainer [2021-02-21 16:25:43,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:43,292 INFO L168 Benchmark]: Toolchain (without parser) took 2686.36 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 51.5 MB in the end (delta: 73.5 MB). Peak memory consumption was 73.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:43,293 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:43,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.18 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 113.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:43,295 INFO L168 Benchmark]: Boogie Preprocessor took 46.82 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:43,298 INFO L168 Benchmark]: RCFGBuilder took 634.74 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 128.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:43,300 INFO L168 Benchmark]: TraceAbstraction took 1616.16 ms. Allocated memory is still 151.0 MB. Free memory was 128.1 MB in the beginning and 51.5 MB in the end (delta: 76.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:43,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 368.18 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 113.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.82 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 112.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 634.74 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 128.6 MB in the end (delta: -16.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1616.16 ms. Allocated memory is still 151.0 MB. Free memory was 128.1 MB in the beginning and 51.5 MB in the end (delta: 76.5 MB). Peak memory consumption was 76.5 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 1 [L32] i=0 VAL [\old(N)=0, a={-2:0}, i=0, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={4:0}] [L32] COND TRUE i