/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/ldv-regression/test26-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:12:08,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:12:08,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:12:08,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 16:12:08,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:12:08,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:12:08,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:12:08,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:12:08,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:12:08,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:12:08,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:12:08,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:12:08,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:12:08,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:12:08,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:12:08,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:12:08,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:12:08,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:12:08,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:12:08,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:12:08,186 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 16:12:08,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:12:08,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:12:08,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:12:08,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:12:08,215 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:12:08,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:12:08,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:12:08,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:12:08,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:12:08,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:12:08,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:12:08,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:12:08,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:12:08,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:12:08,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:12:08,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:12:08,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:12:08,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:12:08,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:12:08,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:12:08,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:12:08,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:12:08,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:12:08,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:12:08,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:12:08,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:12:08,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:12:08,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:12:08,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:12:08,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:12:08,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:12:08,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:12:08,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:12:08,643 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:12:08,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-1.c [2021-02-21 16:12:08,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f40d4a74/fbf1bca3d26948ab8a2c2b7c1deed6fa/FLAGb552c1c42 [2021-02-21 16:12:09,442 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:12:09,443 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c [2021-02-21 16:12:09,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f40d4a74/fbf1bca3d26948ab8a2c2b7c1deed6fa/FLAGb552c1c42 [2021-02-21 16:12:09,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f40d4a74/fbf1bca3d26948ab8a2c2b7c1deed6fa [2021-02-21 16:12:09,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:12:09,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:12:09,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:12:09,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:12:09,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:12:09,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:12:09" (1/1) ... [2021-02-21 16:12:09,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d15c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:09, skipping insertion in model container [2021-02-21 16:12:09,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:12:09" (1/1) ... [2021-02-21 16:12:09,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:12:09,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:12:10,010 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c[493,506] [2021-02-21 16:12:10,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:12:10,025 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:12:10,042 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c[493,506] [2021-02-21 16:12:10,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:12:10,061 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:12:10,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10 WrapperNode [2021-02-21 16:12:10,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:12:10,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:12:10,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:12:10,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:12:10,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (1/1) ... [2021-02-21 16:12:10,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (1/1) ... [2021-02-21 16:12:10,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (1/1) ... [2021-02-21 16:12:10,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (1/1) ... [2021-02-21 16:12:10,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (1/1) ... [2021-02-21 16:12:10,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (1/1) ... [2021-02-21 16:12:10,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (1/1) ... [2021-02-21 16:12:10,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:12:10,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:12:10,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:12:10,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:12:10,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:12:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:12:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:12:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:12:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2021-02-21 16:12:10,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:12:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:12:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:12:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:12:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:12:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2021-02-21 16:12:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:12:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:12:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:12:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:12:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:12:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:12:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:12:10,610 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:12:10,610 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:12:10,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:12:10 BoogieIcfgContainer [2021-02-21 16:12:10,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:12:10,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:12:10,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:12:10,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:12:10,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:12:09" (1/3) ... [2021-02-21 16:12:10,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d02845f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:12:10, skipping insertion in model container [2021-02-21 16:12:10,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:12:10" (2/3) ... [2021-02-21 16:12:10,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d02845f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:12:10, skipping insertion in model container [2021-02-21 16:12:10,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:12:10" (3/3) ... [2021-02-21 16:12:10,624 INFO L111 eAbstractionObserver]: Analyzing ICFG test26-1.c [2021-02-21 16:12:10,633 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:12:10,639 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:12:10,665 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:12:10,702 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:12:10,703 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:12:10,703 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:12:10,703 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:12:10,703 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:12:10,703 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:12:10,703 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:12:10,704 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:12:10,747 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-02-21 16:12:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-21 16:12:10,760 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:12:10,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:12:10,764 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:12:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:12:10,780 INFO L82 PathProgramCache]: Analyzing trace with hash 111133402, now seen corresponding path program 1 times [2021-02-21 16:12:10,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:12:10,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498516446] [2021-02-21 16:12:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:12:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:12:11,099 WARN L141 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size [2021-02-21 16:12:11,101 WARN L147 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size 3 [2021-02-21 16:12:11,122 WARN L141 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size [2021-02-21 16:12:11,123 WARN L147 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size 3 [2021-02-21 16:12:11,130 WARN L141 QuantifierPusher]: treesize reduction 26, result has 46.9 percent of original size [2021-02-21 16:12:11,133 WARN L147 QuantifierPusher]: treesize reduction 26, result has 46.9 percent of original size 23 [2021-02-21 16:12:11,213 WARN L141 QuantifierPusher]: treesize reduction 29, result has 53.2 percent of original size [2021-02-21 16:12:11,215 WARN L147 QuantifierPusher]: treesize reduction 29, result has 53.2 percent of original size 33 [2021-02-21 16:12:11,338 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2021-02-21 16:12:11,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:12:11,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:12:11,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:12:11,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:12:11,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:12:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:12:11,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:12:11,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:12:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 16:12:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:12:11,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:12:11,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:12:11,629 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 16:12:11,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498516446] [2021-02-21 16:12:11,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:12:11,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 16:12:11,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143907808] [2021-02-21 16:12:11,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 16:12:11,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:12:11,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 16:12:11,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 16:12:11,662 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 9 states. [2021-02-21 16:12:12,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:12:12,329 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-02-21 16:12:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 16:12:12,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2021-02-21 16:12:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:12:12,338 INFO L225 Difference]: With dead ends: 22 [2021-02-21 16:12:12,338 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:12:12,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-02-21 16:12:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:12:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:12:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:12:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:12:12,369 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-02-21 16:12:12,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:12:12,369 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:12:12,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 16:12:12,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:12:12,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:12:12,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:12:12,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:12:12,638 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:12:12,639 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:12:12,639 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:12:12,639 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:12:12,640 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |~#global~0.base| |old(~#global~0.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |~#global~0.offset| |old(~#global~0.offset)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 16:12:12,641 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:12:12,641 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:12:12,641 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2021-02-21 16:12:12,642 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:12:12,642 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:12:12,643 INFO L189 CegarLoopUtils]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-02-21 16:12:12,643 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-02-21 16:12:12,643 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 14 28) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= |~#global~0.offset| 0))) [2021-02-21 16:12:12,643 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 14 28) no Hoare annotation was computed. [2021-02-21 16:12:12,643 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 14 28) no Hoare annotation was computed. [2021-02-21 16:12:12,643 INFO L185 CegarLoopUtils]: At program point L21(lines 15 28) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2021-02-21 16:12:12,644 INFO L189 CegarLoopUtils]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-02-21 16:12:12,644 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (and (= |#memory_int| |old(#memory_int)|) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2021-02-21 16:12:12,644 INFO L189 CegarLoopUtils]: For program point assignEXIT(lines 9 12) no Hoare annotation was computed. [2021-02-21 16:12:12,644 INFO L185 CegarLoopUtils]: At program point assignENTRY(lines 9 12) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= |~#global~0.offset| 0))) [2021-02-21 16:12:12,645 INFO L189 CegarLoopUtils]: For program point assignFINAL(lines 9 12) no Hoare annotation was computed. [2021-02-21 16:12:12,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:12:12 BoogieIcfgContainer [2021-02-21 16:12:12,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:12:12,666 INFO L168 Benchmark]: Toolchain (without parser) took 2859.12 ms. Allocated memory is still 161.5 MB. Free memory was 137.3 MB in the beginning and 126.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 84.9 MB. Max. memory is 8.0 GB. [2021-02-21 16:12:12,668 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 161.5 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:12:12,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.99 ms. Allocated memory is still 161.5 MB. Free memory was 136.2 MB in the beginning and 126.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:12:12,670 INFO L168 Benchmark]: Boogie Preprocessor took 39.59 ms. Allocated memory is still 161.5 MB. Free memory was 126.8 MB in the beginning and 125.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:12:12,672 INFO L168 Benchmark]: RCFGBuilder took 509.11 ms. Allocated memory is still 161.5 MB. Free memory was 125.4 MB in the beginning and 112.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:12:12,673 INFO L168 Benchmark]: TraceAbstraction took 2048.06 ms. Allocated memory is still 161.5 MB. Free memory was 111.8 MB in the beginning and 126.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:12:12,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 161.5 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 242.99 ms. Allocated memory is still 161.5 MB. Free memory was 136.2 MB in the beginning and 126.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.59 ms. Allocated memory is still 161.5 MB. Free memory was 126.8 MB in the beginning and 125.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 509.11 ms. Allocated memory is still 161.5 MB. Free memory was 125.4 MB in the beginning and 112.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2048.06 ms. Allocated memory is still 161.5 MB. Free memory was 111.8 MB in the beginning and 126.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 59.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: !(global == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 15 SDslu, 13 SDs, 0 SdLazy, 55 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 76 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 122 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 1416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...