/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 08:27:31,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 08:27:31,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 08:27:31,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 08:27:31,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 08:27:31,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 08:27:31,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 08:27:31,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 08:27:31,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 08:27:31,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 08:27:31,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 08:27:31,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 08:27:31,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 08:27:31,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 08:27:31,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 08:27:31,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 08:27:31,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 08:27:31,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 08:27:31,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 08:27:31,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 08:27:31,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 08:27:31,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 08:27:31,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 08:27:31,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 08:27:31,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 08:27:31,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 08:27:31,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 08:27:31,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 08:27:31,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 08:27:31,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 08:27:31,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 08:27:31,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 08:27:31,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 08:27:31,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 08:27:31,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 08:27:31,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 08:27:31,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 08:27:31,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 08:27:31,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 08:27:31,156 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 08:27:31,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 08:27:31,157 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 08:27:31,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 08:27:31,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 08:27:31,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 08:27:31,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 08:27:31,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 08:27:31,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 08:27:31,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 08:27:31,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 08:27:31,158 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 08:27:31,158 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 08:27:31,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 08:27:31,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 08:27:31,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 08:27:31,406 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 08:27:31,406 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 08:27:31,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound100.c [2021-05-06 08:27:31,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7314d954e/c0859e93b1544238a78ec673a4e4d95f/FLAG134ac89a7 [2021-05-06 08:27:31,803 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 08:27:31,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound100.c [2021-05-06 08:27:31,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7314d954e/c0859e93b1544238a78ec673a4e4d95f/FLAG134ac89a7 [2021-05-06 08:27:31,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7314d954e/c0859e93b1544238a78ec673a4e4d95f [2021-05-06 08:27:31,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 08:27:31,825 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 08:27:31,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 08:27:31,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 08:27:31,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 08:27:31,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:27:31" (1/1) ... [2021-05-06 08:27:31,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3443b6e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:31, skipping insertion in model container [2021-05-06 08:27:31,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:27:31" (1/1) ... [2021-05-06 08:27:31,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 08:27:31,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 08:27:31,977 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound100.c[712,725] [2021-05-06 08:27:31,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:27:31,990 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 08:27:32,006 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_unwindbound100.c[712,725] [2021-05-06 08:27:32,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:27:32,030 INFO L208 MainTranslator]: Completed translation [2021-05-06 08:27:32,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32 WrapperNode [2021-05-06 08:27:32,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 08:27:32,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 08:27:32,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 08:27:32,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 08:27:32,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (1/1) ... [2021-05-06 08:27:32,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (1/1) ... [2021-05-06 08:27:32,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (1/1) ... [2021-05-06 08:27:32,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (1/1) ... [2021-05-06 08:27:32,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (1/1) ... [2021-05-06 08:27:32,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (1/1) ... [2021-05-06 08:27:32,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (1/1) ... [2021-05-06 08:27:32,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 08:27:32,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 08:27:32,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 08:27:32,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 08:27:32,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (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 [2021-05-06 08:27:32,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 08:27:32,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 08:27:32,121 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 08:27:32,121 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 08:27:32,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 08:27:32,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 08:27:32,121 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 08:27:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 08:27:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 08:27:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 08:27:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-05-06 08:27:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 08:27:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 08:27:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 08:27:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 08:27:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 08:27:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 08:27:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 08:27:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 08:27:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 08:27:32,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 08:27:32,340 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 08:27:32,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:27:32 BoogieIcfgContainer [2021-05-06 08:27:32,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 08:27:32,341 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 08:27:32,341 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 08:27:32,342 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 08:27:32,344 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:27:32" (1/1) ... [2021-05-06 08:27:32,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:27:32 BasicIcfg [2021-05-06 08:27:32,366 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 08:27:32,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 08:27:32,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 08:27:32,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 08:27:32,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 08:27:31" (1/4) ... [2021-05-06 08:27:32,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336a230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:27:32, skipping insertion in model container [2021-05-06 08:27:32,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:32" (2/4) ... [2021-05-06 08:27:32,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336a230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:27:32, skipping insertion in model container [2021-05-06 08:27:32,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:27:32" (3/4) ... [2021-05-06 08:27:32,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336a230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:27:32, skipping insertion in model container [2021-05-06 08:27:32,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:27:32" (4/4) ... [2021-05-06 08:27:32,370 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound100.cJordan [2021-05-06 08:27:32,373 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 08:27:32,376 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 08:27:32,416 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 08:27:32,432 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 08:27:32,432 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 08:27:32,432 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 08:27:32,432 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 08:27:32,433 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 08:27:32,433 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 08:27:32,433 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 08:27:32,433 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 08:27:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 08:27:32,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 08:27:32,447 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:27:32,447 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:27:32,448 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:27:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:27:32,455 INFO L82 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2021-05-06 08:27:32,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:27:32,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449572643] [2021-05-06 08:27:32,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:27:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:27:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 08:27:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:27:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 08:27:32,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:27:32,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449572643] [2021-05-06 08:27:32,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449572643] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:27:32,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:27:32,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 08:27:32,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644146352] [2021-05-06 08:27:32,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 08:27:32,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:27:32,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 08:27:32,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:27:32,650 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 08:27:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:27:32,695 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-05-06 08:27:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 08:27:32,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-06 08:27:32,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:27:32,704 INFO L225 Difference]: With dead ends: 23 [2021-05-06 08:27:32,704 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 08:27:32,705 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:27:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 08:27:32,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-06 08:27:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 08:27:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-06 08:27:32,726 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-05-06 08:27:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:27:32,727 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-06 08:27:32,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 08:27:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-06 08:27:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 08:27:32,728 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:27:32,728 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:27:32,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 08:27:32,728 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:27:32,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:27:32,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2021-05-06 08:27:32,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:27:32,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818271411] [2021-05-06 08:27:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:27:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:27:32,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 08:27:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:27:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 08:27:32,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:27:32,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818271411] [2021-05-06 08:27:32,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818271411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:27:32,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:27:32,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 08:27:32,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612651441] [2021-05-06 08:27:32,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 08:27:32,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:27:32,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 08:27:32,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 08:27:32,834 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 08:27:32,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:27:32,915 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-06 08:27:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 08:27:32,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 08:27:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:27:32,916 INFO L225 Difference]: With dead ends: 19 [2021-05-06 08:27:32,916 INFO L226 Difference]: Without dead ends: 19 [2021-05-06 08:27:32,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 08:27:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-06 08:27:32,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-06 08:27:32,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 08:27:32,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-06 08:27:32,919 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-05-06 08:27:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:27:32,920 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-06 08:27:32,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 08:27:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-06 08:27:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 08:27:32,920 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:27:32,920 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:27:32,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 08:27:32,920 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:27:32,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:27:32,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2021-05-06 08:27:32,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:27:32,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370465790] [2021-05-06 08:27:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:27:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 08:27:32,930 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 08:27:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 08:27:32,946 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 08:27:32,966 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-06 08:27:32,966 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 08:27:32,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 08:27:32,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:27:32 BasicIcfg [2021-05-06 08:27:32,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 08:27:32,995 INFO L168 Benchmark]: Toolchain (without parser) took 1169.92 ms. Allocated memory is still 190.8 MB. Free memory was 155.5 MB in the beginning and 102.1 MB in the end (delta: 53.4 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:32,996 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 190.8 MB. Free memory is still 171.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:27:32,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.23 ms. Allocated memory is still 190.8 MB. Free memory was 155.3 MB in the beginning and 174.5 MB in the end (delta: -19.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:32,997 INFO L168 Benchmark]: Boogie Preprocessor took 31.32 ms. Allocated memory is still 190.8 MB. Free memory was 174.5 MB in the beginning and 172.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:32,998 INFO L168 Benchmark]: RCFGBuilder took 276.69 ms. Allocated memory is still 190.8 MB. Free memory was 172.9 MB in the beginning and 158.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:33,001 INFO L168 Benchmark]: IcfgTransformer took 24.37 ms. Allocated memory is still 190.8 MB. Free memory was 158.2 MB in the beginning and 156.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:33,002 INFO L168 Benchmark]: TraceAbstraction took 627.59 ms. Allocated memory is still 190.8 MB. Free memory was 156.7 MB in the beginning and 102.1 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:33,004 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 190.8 MB. Free memory is still 171.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 202.23 ms. Allocated memory is still 190.8 MB. Free memory was 155.3 MB in the beginning and 174.5 MB in the end (delta: -19.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.32 ms. Allocated memory is still 190.8 MB. Free memory was 174.5 MB in the beginning and 172.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.69 ms. Allocated memory is still 190.8 MB. Free memory was 172.9 MB in the beginning and 158.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 24.37 ms. Allocated memory is still 190.8 MB. Free memory was 158.2 MB in the beginning and 156.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 627.59 ms. Allocated memory is still 190.8 MB. Free memory was 156.7 MB in the beginning and 102.1 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [\old(counter)=55, counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [\old(counter)=0, a=53, counter=0, r=0] [L32] EXPR counter++ VAL [\old(counter)=0, a=53, counter=1, counter++=0, r=0] [L32] COND TRUE counter++<100 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, \old(counter)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 536.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.9ms, AutomataDifference: 147.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 12 SDslu, 20 SDs, 0 SdLazy, 41 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.2ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.9ms SsaConstructionTime, 47.1ms SatisfiabilityAnalysisTime, 188.4ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...